A circular plate (radius 2) with a circular hole (radius )has a mass . If the plate is initially placed with a small angle
theta on a horizontal plane as shown on the right, show that the
plate shows a simple harmonic motion and then, find the
frequency of the motion. The plate is rolling without sliding on
the plane

Answers

Answer 1

The frequency of the simple harmonic motion of the rolling plate is[tex]\sqrt{(2 * g) / r)[/tex] / (2π).

To show that the plate exhibits simple harmonic motion (SHM), we need to demonstrate that it experiences a restoring force proportional to its displacement from the equilibrium position.

In this case, when the circular plate is displaced from its equilibrium position, it will experience a gravitational torque that acts as the restoring force. As the plate rolls without sliding, this torque is due to the weight of the plate acting at the center of mass.

The gravitational torque is given by:

τ = r * mg * sin(θ)

Where:

r = Radius of the circular plate

m = Mass of the plate

g = Acceleration due to gravity

θ = Angular displacement from the equilibrium position

For small angles (θ), we can approximate sin(θ) ≈ θ (in radians). Therefore, the torque can be written as:

τ = r * mg * θ

The torque is directly proportional to the angular displacement, which satisfies the requirement for SHM.

To find the frequency of the motion, we can use the formula for the angular frequency (ω) of an object in SHM:

ω = [tex]\sqrt{k / I}[/tex]

Where:

k = Spring constant (in this case, related to the torque)

I = Moment of inertia of the plate

For a circular plate rolling without sliding, the moment of inertia is given by:

I = (1/2) * m * r²

The spring constant (k) can be related to the torque (τ) through Hooke's Law:

τ = -k * θ

Comparing this equation to the equation for the torque above, we find that k = r * mg.

Substituting the values of k and I into the angular frequency formula, we get:

ω = √((r * mg) / ((1/2) * m * r²))

  = √((2 * g) / r)

The frequency (f) of the motion can be calculated as:

f = ω / (2π)

Substituting the value of ω, we obtain:

f = (√((2 * g) / r)) / (2π)

Therefore, the frequency of the simple harmonic motion for the rolling plate is (√((2 * g) / r)) / (2π).

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Related Questions

Two equally charged, 1.348 g spheres are placed with 3.786 cm between their centers. When released, each begins to accelerate at 240.313 m/s2. What is the magnitude of the charge on each sphere? Express your answer in microCoulombs.

Answers

Answer:

The magnitude of the charge on each sphere is 1.171 μC.

Explanation:

Coulomb's law states that the force of attraction or repulsion between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

The force between the two spheres is equal to their mass times their acceleration.

Therefore, the product of the charges on the two spheres is equal to the mass of each sphere times its acceleration times the square of the distance between their centers.

Solving for the charge on each sphere, we get:

Q = sqrt(m * a * d^2)

Q = sqrt(1.348 × 10^-3 kg * 240.313 m/s^2 * (3.786 × 10^-2 m)^2)

Q = 1.171 × 10^-9 C = 1.171 μC

Therefore, the magnitude of the charge on each sphere is 1.171 μC.

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A real inverted image I is formed to the right of a lens by an object placed to the
left of the lens. The image size is one third the size of the object and the distance
between the object and the image 1s D = 60.0 cm, measured along the central axis of
the lens.
(a) What type of lens must be used to produce this image? Explain vour answer
(2 marks)
(b) How far from the object must the lens be placed?
[5 marks)
(c) Find the focal length f of the lens.
[3 marks)
(d) Now a plane mirror with center on the central axis of the lens is placed to the right
of the image I. As a result, a final image /' of the object O is formed. Determine
whether the image I is real or
- virtual and inverted or upright relative to the
obIect. If xplamn vour answers briefy.
4 marks

Answers

(a) The lens must be a converging lens, also known as a convex lens.

(b) The lens must be placed 45.0 cm away from the object.

(c) The focal length of the lens is 15.0 cm.

(d) The image I is real and inverted relative to the object.

(a) To produce a real inverted image, the lens must be a converging lens, also known as a convex lens. Convex lenses have the property of converging incoming light rays, causing them to intersect and form a real image on the opposite side of the lens.

(b) The distance between the object and the image is given as 1sD = 60.0 cm. This distance is equal to the sum of the object distance (s) and the image distance (D) measured along the central axis of the lens. Since the image is formed to the right of the lens, the image distance (D) is positive. Therefore:

D = 60.0 cm - s

(c) The magnification of the lens can be calculated using the formula:

Magnification (m) = - (Image height / Object height) = - (1/3)

For a thin lens, the magnification is also related to the object distance (s), the image distance (D), and the focal length (f) of the lens:

Magnification (m) = - D / s

By equating the two expressions for magnification, we have:

- D / s = - (1/3)

D = (1/3) × s

Substituting the expression for D from part (b):

60.0 cm - s = (1/3) × s

Simplifying the equation:

4s = 180.0 cm

s = 45.0 cm

The lens must be placed 45.0 cm away from the object.

(d) The image formed by the lens is real because it can be obtained on a screen or a surface. The fact that the image is inverted indicates that the lens forms a real inverted image relative to the object.

Therefore, the final image /' formed by the combination of the lens and the plane mirror will also be a real inverted image relative to the object.

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Part A - What is the energy of the trydrogen atom when the electron is in the n1​=6 energy level? Express your answer numerically in electron volts. Keep 4 digits atter the decimal point. - Part B- Jump-DOWN: Express your answer numerically in electron volts. Keep 3 or 4 digits atter the deeimal point. Express your anewer numerically in electron volts. Keep 3 or 4 dieils after the decimal poing, Part C - What is the ortai (or energy state) number of Part 8 ? Enier an integer.

Answers

The energy of the hydrogen atom when the electron is in the n=6 energy level is approximately -2.178 eV.

The energy change (jump-down) when the electron transitions from n=3 to n=1 energy level is approximately 10.20 eV.

The principal quantum number (n) of Part B is 3.

In Part A, the energy of the hydrogen atom in the n=6 energy level is determined using the formula for the energy levels of hydrogen atoms, which is given by

E = -13.6/n² electron volts.

Substituting n=6 into the formula gives -13.6/6² ≈ -2.178 eV.

In Part B, the energy change during a jump-down transition is calculated using the formula

ΔE = -13.6(1/n_final² - 1/n_initial²).

Substituting n_final=1 and n_initial=3 gives

ΔE = -13.6(1/1² - 1/3²)

     ≈ 10.20 eV.

In Part C, the principal quantum number (n) of Part B is simply the value of the energy level mentioned in the problem, which is 3. It represents the specific energy state of the electron within the hydrogen atom.

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The energy of the hydrogen atom when the electron is in the n₁ = 6 energy level is approximately -0.3778 electron volts.

Part A - The energy of the hydrogen atom when the electron is in the n₁ = 6 energy level can be calculated using the formula for the energy of an electron in the hydrogen atom:

Eₙ = -13.6 eV/n₁²

Substituting n₁ = 6 into the formula, we have:

Eₙ = -13.6 eV/(6)² = -13.6 eV/36 ≈ -0.3778 eV

Part B - When an electron jumps down from a higher energy level (n₂) to a lower energy level (n₁), the energy change can be calculated using the formula:

ΔE = -13.6 eV * (1/n₁² - 1/n₂²)

Since the specific values of n₁ and n₂ are not provided, we cannot calculate the energy change without that information. Please provide the energy levels involved to obtain the numerical value in electron volts.

Part C - The "orbit" or energy state number of an electron in the hydrogen atom is represented by the principal quantum number (n). The principal quantum number describes the energy level or shell in which the electron resides. It takes integer values starting from 1, where n = 1 represents the ground state.

Without further information or context, it is unclear which energy state or orbit is being referred to as "Part 8." To determine the corresponding orbit number, we would need additional details or specifications.

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Set 1: Gravitation and Planetary Motion NOTE. E Nis "type-writer notation for x10" ( 2 EB - Exam 2x10") you may use either for this class AND the AP GMm mu F GMm 9 G= 6.67 11 Nm /kg F = mg 9 GMm = mg GM 12 т GM V = 1 GM 9 GM V = - 21 T F 9 = mac T 1. A whale shark has a mass of 2.0 E4 kg and the blue whale has a mass of 1.5 E5 kg a. If the two whales are 1.5 m apart, what is the gravitational force between them? b. How does the magnitude of the gravitational force between the two animals compare to the gravitational force between each and the Earth? c. Explain why objects on Earth do not seem to be attracted 2. An asteroid with a mass of 1.5 E21 kg orbits at a distance 4E8 m from a planet with a mass of 6 E24 kg a. Determine the gravitational force on the asteroid. b. Determine the gravitational force on the planet. C Determine the orbital speed of the asteroid. d Determine the time it takes for the asteroid to complete one trip around the planet 3. A 2 2 14 kg comet moves with a velocity of 25 E4 m/s through Space. The mass of the star it is orbiting is 3 E30 kg a Determine the orbital radius of the comet b. Determine the angular momentum of the comet. (assume the comet is very small compared to the star) c An astronomer determines that the orbit is not circular as the comet is observed to reach a maximum distance from the star that is double the distance found in part (a). Using conservation of angular momentum determine the speed of the comet at its farthest position 4. A satellite that rotates around the Earth once every day keeping above the same spot is called a geosynchronous orbit. If the orbit is 3.5 E7 m above the surface of the and the radius and mass of the Earth is about 6.4 E6 m and 6.0 E24 kg respectively. According to the definition of geosynchronous, what is the period of the satellite in hours? seconds? a. Determine the speed of the satellite while in orbit b. Explain satellites could be used to remotely determine the mass of unknown planets 5. Two stars are orbiting each other in a binary star system. The mass of each of the stars is 2 E20 kg and the distance from the stars to the center of their orbit is 1 E7 m. a. Determine the gravitational force between the stars.. b. Determine the orbital speed of each star

Answers

In this set of questions, we are exploring the concepts of gravitation and planetary motion. We use the formulas related to gravitational force, orbital speed, and orbital radius to solve various problems.

Firstly, we calculate the gravitational force between two whales and compare it to the gravitational force between each whale and the Earth. Then, we determine the gravitational force on an asteroid and a planet, as well as the orbital speed and time taken for an asteroid to complete one orbit.

Next, we find the orbital radius and angular momentum of a comet orbiting a star, and also calculate the speed of the comet at its farthest position. Finally, we discuss the period of a geosynchronous satellite orbiting the Earth and how satellites can be used to determine the mass of unknown planets.

a. To calculate the gravitational force between the whale shark and the blue whale, we use the formula F = GMm/r^2, where G is the gravitational constant, M and m are the masses of the two objects, and r is the distance between them. Plugging in the values, we find the gravitational force between them.

b. To compare the gravitational force between the two animals and the Earth, we calculate the gravitational force between each animal and the Earth using the same formula.

We observe that the force between the animals is much smaller compared to the force between each animal and the Earth. This is because the mass of the Earth is significantly larger than the mass of the animals, resulting in a stronger gravitational force.

c. Objects on Earth do not seem to be attracted to each other strongly because the gravitational force between them is much weaker compared to the gravitational force between each object and the Earth.

The mass of the Earth is substantially larger than the mass of individual objects on its surface, causing the gravitational force exerted by the Earth to dominate and make the gravitational force between objects on Earth negligible in comparison.

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The resolution of the timer on your phone is 0.01 s How fast would your phone need to be moving (relative to you) in ms so that the effects of special relativity on its accuracy become significant when measuring a 1
minute process?

Answers

The resolution of the timer on the phone is 0.01 s , therefore, the phone would need to be moving at approximately 299,792.45784 meters per millisecond (m/ms) relative to the effects of special relativity on its accuracy to become significant when measuring a 1-minute process.

To calculate the speed required for such significant effects, one can use the formula for time dilation:

Δt' = Δt × √(1 - ([tex]v^2[/tex]/[tex]c^2[/tex]))

Where:

Δt' is the measured time interval by the moving phone (60 seconds + 0.01 seconds)

Δt is the proper time interval (60 seconds)

v is the relative velocity between the phone and the observer

c is the speed of light (approximately 299,792,458 meters per second)

Rearranging the formula,

v = √((1 - (Δ[tex]t'^2[/tex] / Δ[tex]t^2[/tex])) ×[tex]c^2[/tex])

Substituting the given values:

v = √((1 - ((60.01[tex]s^)^2[/tex] / (60 [tex]s^)^2[/tex])) × (299,792,458 m/[tex]s^)^2[/tex])

Calculating the expression:

v ≈ 299,792,457.84 m/s

Converting the speed to meters per millisecond (ms):

v ≈ 299,792,457.84 m/s × (1 ms / 1000 s)

v ≈ 299,792.45784 m/ms

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14. for the following cross-section, calculate the location of the centroid with respect to line a-a, and calculate the moment of inertia (i) about the centroidal axis.

Answers

The location of the centroid can be found by taking the average of the individual centroids weighted by their respective areas, while the moment of inertia can be obtained by summing up the moments of inertia of each shape with respect to the centroidal axis.

To calculate the location of the centroid with respect to line a-a, we need to find the x-coordinate of the centroid. The centroid is the average position of all the points in the cross-section, and it represents the center of mass.

First, divide the cross-section into smaller shapes whose centroids are known. Calculate the areas of these shapes, and find their individual centroids. Then, multiply each centroid by its respective area.

Next, sum up all these products and divide by the total area of the cross-section. This will give us the x-coordinate of the centroid with respect to line a-a.

To calculate the moment of inertia (i) about the centroidal axis, we need to consider the individual moments of inertia of each shape. The moment of inertia is a measure of an object's resistance to rotational motion.

Finally, sum up the moments of inertia of all the shapes to get the total moment of inertia (i) about the centroidal axis of the cross-section.

Remember, the centroid and moment of inertia calculations depend on the specific shape of the cross-section. Therefore, it is important to know the shape and dimensions of the cross-section in order to accurately calculate these values.

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Transcranial magnetic stimulation (TMS) is a procedure used to evaluate damage from a stroke. During a TMS procedure, a magnetic field is produced in the brain using external coils. To produce this magnetic field, the current in the coils rises from zero to its peak in about 81.0μs, and since the magnetic field in the brain is proportional to the current, it too rises from zero to its peak of 5.00 T in the same timeframe. If the resulting magnetic field is uniform over a circular area of diameter 2.45 cm inside the patient's brain, what must be the resulting induced emf (in V) around this region of the patient's brain during this procedure?

Answers

To determine the resulting induced emf (electromotive force) around the region of the patient's brain during the TMS procedure, we can use Faraday's law of electromagnetic induction.

Faraday's law states that the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.

In this case, the induced emf is caused by the changing magnetic field produced by the coils. The magnetic field rises from zero to its peak of 5.00 T in a time interval of 81.0 μs.

To calculate the induced emf, we need to find the rate of change of magnetic flux through the circular area inside the patient's brain.

The magnetic flux (Φ) through a circular area is given by:

Φ = B * A

where B is the magnetic field and A is the area.

The area of the circular region can be calculated using the formula for the area of a circle:

A = π * r^2

where r is the radius of the circle, which is half the diameter.

Given that the diameter of the circular area is 2.45 cm, the radius (r) is 1.225 cm or 0.01225 m.

Substituting the values into the formulas:

A = π * (0.01225 m)^2

A = 0.00047143 m^2

Now we can calculate the induced emf:

emf = ΔΦ / Δt

emf = (B * A) / Δt

emf = (5.00 T * 0.00047143 m^2) / (81.0 μs)

emf = 0.0246 V

Therefore, the resulting induced emf around the region of the patient's brain during the TMS procedure is approximately 0.0246 V.

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A car drives over the top of a hill that has a radius of 50m
a. draw the free body diagram of the car when itis at the top of the hill, showing the r-axis and inc the net force on it
b. write newtons 2nd law for the r-axis
c. what max speed have at the top of the hill without flying off the road?

Answers

By Using the relationship between centripetal force and velocity (F_c = m * v^2 / r), we can solve for the maximum speed (v) at the top of the hill without flying off the road.

a. The free body diagram of the car at the top of the hill would include the following forces:

Gravitational force (mg): It acts vertically downward, towards the center of the Earth.

Normal force (N): It acts perpendicular to the surface of the road and provides the upward force to balance the gravitational force.

Centripetal force (F_c): It acts towards the center of the circular path and is responsible for keeping the car moving in a curved trajectory.

The net force on the car at the top of the hill would be the vector sum of these forces.

b. Newton's second law for the radial (r) axis can be written as:

Net force in the r-direction = mass × acceleration_r

The net force in the r-direction is the sum of the centripetal force (F_c) and the component of the gravitational force in the r-direction (mg_r):

F_c + mg_r = mass × acceleration_r

Since the car is at the top of the hill, the normal force N is equal in magnitude but opposite in direction to the component of the gravitational force in the r-direction. Therefore, mg_r = -N.

F_c - N = mass × acceleration_r

c. To determine the maximum speed the car can have at the top of the hill without flying off the road, we need to consider the point where the normal force becomes zero. At this point, the car would lose contact with the road.

When the normal force becomes zero, the gravitational force is the only force acting on the car, and it provides the centripetal force required to keep the car moving in a circular path.

Therefore, at the top of the hill:

mg = F_c

Hence, using the relationship between centripetal force and velocity (F_c = m * v^2 / r), we can solve for the maximum speed (v) at the top of the hill without flying off the road.

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A typical region of interstellar space may contain 106
atoms per cubic meter (primarily hydrogen) at a temperature of
-173.15 °C. What is the pressure of this gas?

Answers

The pressure of gas in a typical region of interstellar space containing 106 atoms per cubic meter (mainly hydrogen) at a temperature of -173.15 °C is 0.26 femtometer-2.

What is pressure? Pressure is defined as the amount of force exerted per unit area. The following equation defines pressure in physics: P = F / A where P represents pressure, F represents force, and A represents area. The given equation may be utilized to solve the present problem. How to solve this problem? The ideal gas law can be used to solve this problem: PV = nRT where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the temperature.

The density can be used to convert moles to volume (mass / volume), and since the gas in this example is hydrogen, its molar mass is 2.016 grams per mole.

We can use the following equation for the density: p = m / V = nM / V where p is the density, m is the mass, M is the molar mass, and V is the volume.

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Consider a diffraction grating with a grating constant of 500 lines/mm. The grating is illuminated with a composite light source consisting of two distinct wavelengths of light being 652 nm and 488 nm. if a screen is placed a distance 1.88 m away, what is the linear separation between the 1st order maxima of the 2 wavelengths? Express this distance in meters.

Answers

Diffraction grating has a grating constant of 500 lines/mm. The grating is illuminated with a composite light source consisting of two distinct wavelengths of light being 652 nm and 488 nm.

A screen is placed a distance of 1.88 m away from the grating. We have to calculate the linear separation between the 1st order maxima of the 2 wavelengths.To find the distance between the 1st order maxima of the two wavelengths, we can use the formula:dλ = (mλd)/a Where, dλ = distance between the consecutive maxima, m = order of diffraction, λ = wavelength of light, d = distance between the slit and the screen, a = slit spacing. First, we have to convert the grating constant from mm to m as the distance between the slit spacing is given in m.500 lines/mm = 500 lines/([tex]10^-3[/tex]m) = 0.5 x [tex]10^6[/tex] lines/m.

Now, the distance between the slits will be:a = 1/ (0.5 x [tex]10^6[/tex]) = 2 x [tex]10^-6[/tex] m.For the 1st order maximum, m = 1.dλ = (mλd)/a.Using the above formula, the distance between the 1st order maxima of the 2 wavelengths is:For [tex]λ = 652 nm:dλ1 = (1 x 652 x 10^-9 x 1.88) / (2 x ) = 6.02 x m.[/tex]For[tex]λ = 488 nm:dλ2 = (1 x 488 x x 1.88) / (2 x 10^-6) = 4.55 x[/tex]m

The linear separation between the 1st order maxima of the 2 wavelengths is: [tex]dλ1 - dλ2 = (6.02 - 4.55) x m= 1.47 x[/tex]m.Therefore, the linear separation between the 1st order maxima of the 2 wavelengths is 1.47 x [tex]10^-4[/tex] m or 0.000147 m.

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When a photon is absorbed by a semiconductor, an electron-hole pair is created. Give a physical explanation of this statement using the energy-band model as the basis for your description.

Answers

When a photon is absorbed by a semiconductor, an electron-hole pair is created due to the energy-band model. This occurs because photons carry energy, and when they interact with the semiconductor material, they can transfer their energy to the electrons within the material.

The energy-band model describes the behavior of electrons in a semiconductor material. In a semiconductor, such as silicon or germanium, there are two main energy bands: the valence band and the conduction band. The valence band contains electrons with lower energy, while the conduction band contains electrons with higher energy.

When a photon, which is a packet of electromagnetic energy, interacts with the semiconductor, its energy can be absorbed by an electron in the valence band. This absorption causes the electron to gain sufficient energy to move from the valence band to the conduction band, leaving behind an unfilled space in the valence band called a hole. This process is known as electron excitation.

The electron that moved to the conduction band now acts as a mobile charge carrier, capable of participating in electric current flow. The hole left in the valence band also behaves as a quasi-particle with a positive charge and can move through the material.

The creation of the electron-hole pair is a fundamental process in the operation of semiconductor devices such as solar cells, photodiodes, and transistors. These electron-hole pairs play a crucial role in the generation, transport, and utilization of electric charge within the semiconductor.

In summary, when a photon interacts with a semiconductor material, it can transfer its energy to an electron in the valence band. This energy absorption causes the electron to move to the conduction band, creating an electron-hole pair. The electron becomes a mobile charge carrier, contributing to electric current flow, while the hole acts as a positively charged quasi-particle.

Understanding the creation of electron-hole pairs is essential in the design and operation of semiconductor devices, where the manipulation and control of these charge carriers are crucial for their functionality. The energy-band model provides a framework for explaining and analyzing the behavior of electrons and holes in semiconductors, enabling advancements in modern electronics and optoelectronics.

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Hey!!
I need help in a question...

• Different types of fuels and the amount of pollutants they release.

Please help me with the question.
Thankss​

Answers

Answer: Different types of fuels have varying compositions and release different amounts of pollutants when burned. Here are some common types of fuels and the pollutants associated with them:

Fossil Fuels:

a. Coal: When burned, coal releases pollutants such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM).

b. Petroleum (Oil): Burning petroleum-based fuels like gasoline and diesel produces CO2, SO2, NOx, volatile organic compounds (VOCs), and PM.

Natural Gas:

Natural gas, which primarily consists of methane (CH4), is considered a cleaner-burning fuel compared to coal and oil. It releases lower amounts of CO2, SO2, NOx, VOCs, and PM.

Biofuels:

Biofuels are derived from renewable sources such as plants and agricultural waste. Their environmental impact depends on the specific type of biofuel. For example:

a. Ethanol: Produced from crops like corn or sugarcane, burning ethanol emits CO2 but generally releases fewer pollutants than fossil fuels.

b. Biodiesel: Made from vegetable oils or animal fats, biodiesel produces lower levels of CO2, SO2, and PM compared to petroleum-based diesel.

Renewable Energy Sources:

Renewable energy sources like solar, wind, and hydropower do not produce pollutants during electricity generation. However, the manufacturing, installation, and maintenance of renewable energy infrastructure can have environmental impacts.

It's important to note that the environmental impact of a fuel also depends on factors such as combustion technology, fuel efficiency, and emission control measures. Additionally, advancements in clean technologies and the use of emission controls can help mitigate the environmental impact of burning fuels.

A hammer thrower (athlete, not mad carpenter) can hold on with a
maximum force of 1550 N.
How fast can she swing the 4.0 kg, 1.9 m radius hammer (including
her arms) around herself and
not lose her gr

Answers

The hammer thrower can swing the 4.0 kg hammer around herself at a maximum speed of approximately 42.99 m/s without losing her grip, given her maximum force of 1550 N.

To find the maximum speed at which the hammer thrower can swing the hammer without losing her grip, we can use the concept of centripetal force.

The centripetal force required to keep the hammer moving in a circular path is provided by the tension in the thrower's grip. This tension force should be equal to or less than the maximum force she can exert, which is 1550 N.

The centripetal force is given by the equation:

F = (m * v²) / r

Where:

F is the centripetal force

m is the mass of the hammer (4.0 kg)

v is the linear velocity of the hammer

r is the radius of the circular path (1.9 m)

We can rearrange the equation to solve for the velocity:

v = √((F * r) / m)

Substituting the values:

v = √((1550 N * 1.9 m) / 4.0 kg)

v = √(7395 Nm / 4.0 kg)

v = √(1848.75 (Nm) / kg)

v ≈ 42.99 m/s

Therefore, the hammer thrower can swing the 4.0 kg hammer around herself at a maximum speed of approximately 42.99 m/s without losing her grip, given her maximum force of 1550 N.

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Each month the speedy dry-cleaning company buys 1 barrel (0.190 m³) of dry- cleaning fluid. Ninety two percent of the fluid is lost to the atmosphere and eight percent remains as residue to be disposed of. The density of the dry-cleaning fluid is 1.5940 g/mL. The monthly mass emission rate to the atmosphere in kg/month is nearly. Show and submit your "detail work" for partial credit. (CLO 1) O 1) 278.63 kg/month O 2) 302.86 kg/month O 3) 332.50 kg/month
O 4) 24.23 kg/month

Answers

The monthly mass emission rate to the atmosphere in kg/month is 0.2786 kg since the mass emitted into the atmosphere is 0.2786 kg. Option 1.

Given: Volume of fluid purchased in a month = 0.190 m³

Density of fluid = 1.5940 g/mL

Mass of fluid purchased = volume x density= 0.190 m³ x 1.5940 g/m³= 0.3029 kg

Airborne emissions rate = 92% of the mass of fluid purchased

Residue disposal rate = 8% of the mass of fluid purchased

So, the mass emitted into the atmosphere = 92% x 0.3029 kg= 0.2786 kg

The monthly mass emission rate to the atmosphere in kg/month is approximately 0.2786 kg/month. Hence, option 1: 278.63 kg/month is the correct answer.

Here are the details of the solution:

M = 0.190 m³ x 1.5940 g/mL = 0.3029 kg

So, the mass of fluid purchased in a month is 0.3029 kg.

Airborne emissions rate = 92% of the mass of fluid purchased= 0.92 x 0.3029 kg= 0.2786 kg

The mass of the fluid that remains as residue to be disposed of is 8% of the mass of fluid purchased.= 0.08 x 0.3029 kg= 0.0243 kg

So, the monthly mass emission rate to the atmosphere in kg/month is 0.2786 kg. Option 1.

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A roller coaster car is at the top of a huge hill and is at rest briefly. Then it rolls down the track and accelerates as its passengers scream. By the time it is 20 m down the track, it is moving at 3 m/s. If the hill is at 9°, what is the coefficient of friction between the car and the track?

Answers

The coefficient of friction between the car and the track is approximately -0.158. To determine the coefficient of friction between the roller coaster car and the track, we need to consider the forces acting on the car and apply the principles of Newtonian mechanics.

Distance down the track (d) = 20 m

Velocity of the car (v) = 3 m/s

Angle of the hill (θ) = 9°

First, let's calculate the acceleration of the car using the kinematic equation:

v^2 = u^2 + 2ad

where:

v is the final velocity (3 m/s),

u is the initial velocity (0 m/s, as the car is at rest),

a is the acceleration, and

d is the distance (20 m).

Solving for a:

a = (v^2 - u^2) / (2d)

= (3^2 - 0) / (2 * 20)

= 0.225 m/s^2

The force acting on the car down the hill is the component of the gravitational force parallel to the incline. It can be calculated using:

F = m * g * sin(θ)

where:

m is the mass of the car, and

g is the acceleration due to gravity (approximately 9.8 m/s^2).

Now, we can calculate the normal force (N) acting on the car perpendicular to the incline. It is equal to the weight of the car, given by:

N = m * g * cos(θ)

The frictional force (f) between the car and the track opposes the motion and is given by:

f = μ * N

where:

μ is the coefficient of friction.

Since the car is accelerating down the track, the frictional force is directed opposite to the motion and can be written as:

f = -μ * N

Now, equating the frictional force to the force down the hill:

-μ * N = m * g * sin(θ)

Substituting the expressions for N and f:

-μ * (m * g * cos(θ)) = m * g * sin(θ)

Canceling out the mass and acceleration due to gravity:

-μ * cos(θ) = sin(θ)

Simplifying:

μ = -tan(θ)

Substituting the value of θ (9°):

μ = -tan(9°)

Calculating:

μ ≈ -0.158

The negative sign indicates that the coefficient of friction is acting in the direction opposite to the motion of the car. Therefore, the coefficient of friction between the car and the track is approximately -0.158.

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Airplane emf A Boeing KC-135A airplanes a Wingspan of 39.9 m and flies at constant attitude in a northerly direction with a speed of 840 km/h You may want to review (Paos 39.821) If the vertical component of the Earth's magnetic field is 4.8x10-T and is horisontal components 1810T ww is the induced or between the wing tips? Express your answer using two significant figures

Answers

The induced emf between the wingtips of the Boeing KC-135A airplane is approximately -0.0112 V

To determine the induced emf between the wingtips of the Boeing KC-135A airplane, we need to consider the interaction between the airplane's velocity and the Earth's magnetic field.

The induced emf can be calculated using Faraday's law of electromagnetic induction, which states that the induced emf is equal to the rate of change of magnetic flux through a surface.

The magnetic flux through an area is given by the product of the magnetic field and the area, Φ = B * A. In this case, we can consider the wing area of the airplane as the area through which the magnetic flux passes.

The induced emf can be expressed as:

emf = -dΦ/dt

Since the airplane is flying in a northerly direction, the wing area is perpendicular to the horizontal component of the Earth's magnetic field, which means there is no change in flux in that direction. Therefore, the induced emf is due to the vertical component of the Earth's magnetic field.

Given that the vertical component of the Earth's magnetic field is 4.8x10^-5 T and the horizontal component is 1810 T, we can calculate the induced emf as:

emf = -dΦ/dt = -Bv

where B is the vertical component of the Earth's magnetic field and v is the velocity of the airplane.

Converting the velocity from km/h to m/s:

v = 840 km/h * (1000 m / 3600 s) ≈ 233.33 m/s

Substituting the values into the equation:

emf = -(4.8x10^-5 T)(233.33 m/s)

Calculating this expression, we find:

emf ≈ -0.0112 V

Therefore, the induced emf between the wingtips of the Boeing KC-135A airplane is approximately -0.0112 V.

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Part A Determine the average binding energy of a nucleon in Na. Use Appendix B. Express your answer using four significant figures. nt Sharing VOI ΑΣΦ ? tings 7.45 MeV/nucleon Tools > Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B Determine the average binding energy of a nucleon in Na. Express your answer using four significant figures. ? 190 AED MeV/nucleon

Answers

To determine the average binding energy of a nucleon in Na (sodium), we need to use the information from Appendix B, which provides the average binding energy per nucleon for various elements. Using the given data, we can find the average binding energy per nucleon for Na.

Part A:

Based on the question, it seems that the provided answer (7.45 MeV/nucleon) is incorrect. Unfortunately, I don't have access to Appendix B or the specific data needed to calculate the average binding energy of a nucleon in Na.

Part B:

Based on the provided answer (190 AED MeV/nucleon), it seems to be a typographical error, as "AED" is not a standard unit used in this context. It's possible that "AED" was intended to be "MeV" instead.

To determine the average binding energy of a nucleon in Na, you would need to refer to the appropriate data source, such as Appendix B, and find the value for sodium (Na). The result should be expressed using four significant figures.

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A series RLC Circuit has resonance angular frequency 2.00x10³ rad/s. When it is operating at some input frequency, XL=12.0Ω and XC=8.00Ω . (c). If it is possible, find L and C. If it is not possible, give a compact expression for the condition that L and C must satisfy..

Answers

For the given conditions, the values of L and C are L = 6.00 mH and C = 6.25 μF (microfarads), respectively.

To find the values of L (inductance) and C (capacitance) for the given series RLC circuit, we can use the resonance angular frequency (ω) and the values of XL (inductive reactance) and XC (capacitive reactance). The condition for resonance in a series RLC circuit is given by:

[tex]X_L = X_C[/tex]

Using the formula for inductive reactance [tex]X_L[/tex] = ωL and capacitive reactance [tex]X_C[/tex] = 1/(ωC), we can substitute these values into the resonance condition:

ωL = 1/(ωC)

Rearranging the equation, we have:

L = 1/(ω²C)

Now we can substitute the given values:

[tex]X_L[/tex] = 12.0 Ω

[tex]X_C[/tex] = 8.00 Ω

Since [tex]X_L[/tex] = ωL and [tex]X_C[/tex] = 1/(ωC), we can write:

ωL = 12.0 Ω

1/(ωC) = 8.00 Ω

From the resonance condition, we know that ω (resonance angular frequency) is given as [tex]2.00 * 10^3[/tex] rad/s.

Substituting ω = [tex]2.00 * 10^3[/tex] rad/s into the equations, we get:

[tex](2.00 * 10^3) L = 12.0[/tex]

[tex]1/[(2.00 * 10^3) C] = 8.00[/tex]

Solving these equations will give us the values of L and C:

L = 12.0 / [tex](2.00 * 10^3)[/tex] Ω = [tex]6.00 * 10^{-3[/tex] Ω = 6.00 mH (millihenries)

C = 1 / [[tex](2.00 * 10^3)[/tex] × 8.00] Ω = [tex]6.25 * 10^{-6[/tex] F (farads)

Therefore, L and C have the following values under the specified circumstances: L = 6.00 mH and C = 6.25 F (microfarads), respectively.

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The resonance angular frequency of a series RLC circuit is given as 2.00x10³ rad/s. At this frequency, the reactance of the inductor (XL) is 12.0Ω and the reactance of the capacitor (XC) is 8.00Ω.



To find the values of inductance (L) and capacitance (C), we can use the formulas for reactance:
XL = 2πfL   (1)
XC = 1/(2πfC)   (2)
Where f is the input frequency in Hz.
By substituting the given values, we have:
12.0Ω = 2π(2.00x10³)L   (3)
8.00Ω = 1/(2π(2.00x10³)C)   (4)
Now, let's solve equations (3) and (4) for L and C.
From equation (3):
L = 12.0Ω / (2π(2.00x10³))   (5)
From equation (4):
C = 1 / (8.00Ω * 2π(2.00x10³))   (6)
Using these equations, we can calculate the values of L and C. It is possible to find L and C using these equations. The inductance (L) is equal to 9.54x10⁻⁶ H (Henry), and the capacitance (C) is equal to 1.97x10⁻⁵ F (Farad).

Two converging lenses with the same focal length of 10 cm are 40 cm apart. If an object is located 15 cm from one of the lenses, find the distance from the final image of the object. a. 0 cm b. 10 cm c. 5 cm d. 15 cm

Answers

The image of the object will form at a distance of 10 cm from the second lens, which is answer (b).

When two converging lenses with the same focal length are 40 cm apart and an object is located 15 cm from one of the lenses, we can find the distance from the final image of the object by using the lens formula. The lens formula states that 1/v - 1/u = 1/f, where v is the distance of the image from the lens, u is the distance of the object from the lens, and f is the focal length of the lens.

Using this formula for the first lens, we get:

1/v - 1/15 = 1/10

Solving for v, we get v = 30 cm.

Using the same formula for the second lens, with the object now located at 30 cm, we get:

1/v - 1/30 = 1/10

Solving for v, we get v = 10 cm.

Therefore, the image of the object will form at a distance of 10 cm from the second lens, which is answer (b).

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Consider a 0.100 g pin dropped from a height of 1.75 m onto a hard surface, where 0.050 % of its energy is converted into a pulse of sound that has a duration of 0.100 s. If you are in an environment where the intensity of the quietest audible sound is 5 x 10-6 W/m², how close do you need to be to the pin to hear it drop?

Answers

Summary:

To hear the sound of a 0.100 g pin dropped from a height of 1.75 m, we need to determine how close we need to the pin. Given that 0.050% of the pin's energy is converted into a sound pulse with a duration of 0.100 s, and the intensity of the quietest audible sound is 5 x 10^-6 W/m², we can calculate the required distance.

Explanation:

To find the distance at which we can hear the sound of the pin dropping, we can start by calculating the energy of the sound pulse. Since 0.050% of the pin's energy is converted into sound, we can determine the sound energy by multiplying 0.050% (0.0005) by the gravitational potential energy of the pin. The potential energy is given by mgh, where m is the mass of the pin (0.100 g) and h is the height (1.75 m). Converting the mass to kilograms and performing the calculation, we find that the sound energy is 1.715 x 10^-4 J.

Next, we can determine the power of the sound pulse by dividing the sound energy by the duration of the pulse. The power is given by P = E / t, where P is the power, E is the energy, and t is the duration of the sound pulse. Substituting the values, we get P = 1.715 x 10^-4 J / 0.100 s, which equals 1.715 x 10^-3 W.

Now, we can use the equation for sound intensity to calculate the required distance. The equation is I = P / A, where I is the sound intensity, P is the power, and A is the area through which the sound is spreading. Since we are given the sound intensity (5 x 10^-6 W/m²) and the power (1.715 x 10^-3 W), we can rearrange the equation to solve for A. Rearranging, we get A = P / I = 1.715 x 10^-3 W / 5 x 10^-6 W/m², which equals 3.43 x 10^2 m².

Since the area of a sphere is given by A = 4πr², where r is the radius, we can solve for r by rearranging the equation as r = √(A / (4π)). Substituting the value of A, we find that r is approximately 2.09 meters. Therefore, one needs to be about 2.09 meters away from the pin to hear the sound of it dropping, assuming no other factors affect the sound propagation.

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You just installed a new swing in your backyard. When you are swinging, you are 168 cm from the point where you attached the swing. Calculate how long it will take for the swing to complete 4 complete cycles and post your result.

Answers

The time it takes for the swing to complete 4 complete cycles is 10.4 s.

What is the time taken to complete 4 cycles?

The time it takes for the swing to complete 4 complete cycles is calculated by applying the following formula as follows;

The formula for the period of a simple pendulum is given by:

T = 2π√(L/g)

Where;

T is the period L is the length of the pendulum g is the acceleration due to gravity

The given parameters;

L = 168 cm = 1.68 m

The time it takes for the swing to complete 1 complete cycles is calculated as;

T = 2π√(1.68/9.8)

T = 2π√(0.1714)

T = 2.6 s

The time it takes for the swing to complete 4 complete cycles is calculated as;

T = 4 x 2.6 s

T = 10.4 s

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Plotting the stopping potential i.e. the voltage necessary just to stop electrons from reaching the collector in a photoelectric experiment vs the frequency of the incident light, gives a graph like the one attached. If the intensity of the light used is increased and the experiment is repeated, which one of the attached graphs would be obtained? ( The original graph is shown as a dashed line). Attachments AP 2.pdf A. Graph ( a ). B. Graph (b). c. Graph (c). D. Graph (d).

Answers

The question asks which of the given graphs (labeled A, B, C, D) would be obtained when the intensity of the light used in a photoelectric experiment is increased, based on the original graph showing the stopping potential vs. frequency of the incident light.

When the intensity of the incident light in a photoelectric experiment is increased, the number of photons incident on the surface of the photocathode increases. This, in turn, increases the rate at which electrons are emitted from the surface. As a result, the stopping potential required to prevent electrons from reaching the collector will decrease.

Looking at the options provided, the graph that would be obtained when the intensity of the light is increased is likely to show a lower stopping potential for the same frequencies compared to the original graph (dashed line). Therefore, the correct answer would be graph (c) since it shows a lower stopping potential for the same frequencies as the original graph. Graphs (a), (b), and (d) do not exhibit this behavior and can be ruled out as possible options.

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in an electric shaver, the blade moves back and forth
over a distance of 2.0 mm in simple harmonic motion, with frequency
100Hz. find
1.1 amplitude
1.2 the maximum blade speed
1.3 the magnitude of the

Answers

1.1 Amplitude:

The amplitude is the maximum displacement of the blade from its equilibrium position. In this case, the blade of the electric shaver moves back and forth over a distance of 2.0 mm. This distance is the amplitude of the simple harmonic motion.

1.2 Maximum blade speed:

The maximum blade speed occurs when the blade is at the equilibrium position, which is the midpoint of its oscillation. At this point, the blade changes direction and has the maximum speed. The formula to calculate the maximum speed (v_max) is v_max = A * ω, where A is the amplitude and ω is the angular frequency.

ω = 2π * 100 Hz = 200π rad/s

v_max = 2.0 mm * 200π rad/s ≈ 1256 mm/s

Therefore, the maximum speed of the blade is approximately 1256 mm/s.

1.3 Magnitude of the maximum acceleration:

The maximum acceleration occurs when the blade is at its extreme positions, where the displacement is equal to the amplitude. The formula to calculate the magnitude of the maximum acceleration (a_max) is a_max = A * ω^2, where A is the amplitude and ω is the angular frequency.

a_max = 2.0 mm * (200π rad/s)^2 ≈ 251,327 mm/s^2

Therefore, the magnitude of the maximum acceleration is approximately 251,327 mm/s^2.

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90 90 Strontium 38 Sr has a half-life of 29.1 yr. It is chemically similar to calcium, enters the body through the food chain, and collects in the bones. Consequently, 3g Sr is a particularly serious health hazard. How long (in years) will it take for 99.9328% of the 2: Sr released in a nuclear reactor accident to disappear? 90 38 Number i 113.355 Units yr

Answers

The problem involves the radioactive isotope Strontium-90 (90Sr), which has a half-life of 29.1 years and poses a health hazard when accumulated in the bones. The task is to determine how long it will take for 99.9328% of the 2g of 90Sr released in a nuclear reactor accident to disappear, given that its chemical behavior is similar to calcium.

To solve this problem, we can use the concept of radioactive decay and the half-life of the isotope. The key parameters involved are half-life, radioactive decay, percentage, and time.

The half-life of 90Sr is given as 29.1 years, which means that every 29.1 years, half of the initial amount of 90Sr will decay. In this case, we are interested in determining the time required for 99.9328% of the 2g of 90Sr to disappear. We can set up an exponential decay equation using the formula: amount = initial amount * (1/2)^(time/half-life). By substituting the given values and solving for time, we can find the duration required for the specified percentage of 90Sr to decay.

Radioactive decay refers to the spontaneous disintegration of atomic nuclei, leading to the release of radiation and the transformation of the isotope into a more stable form. The half-life represents the time it takes for half of the initial quantity of the isotope to decay. In this problem, we consider the accumulation of 90Sr in the bones and its potential health hazard, highlighting the need to determine the time required for a significant percentage of the isotope to disappear.

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Based on what you have learned about galaxy formation from a protogalactic cloud (and similarly star formation from a protostellar cloud), the fact that dark matter in a galaxy is distributed over a much larger volume than luminous matter can be explained by 1. Dark matter does not emit EM radiations. II. The pressure of an ideal gas decreases when temperature drops. III. The temperature of an ideal gas decreases when its thermal energy decreases. II

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Based on what you have learned about galaxy formation from a protogalactic cloud (and similarly star formation from a protostellar cloud), the fact that dark matter in a galaxy is distributed over a much larger volume than luminous matter can be explained by "The pressure of an ideal gas decreases when the temperature drops."

(II)How is this true?

The statement that "The pressure of an ideal gas decreases when the temperature drops." is the best answer to explain the scenario where the dark matter in a galaxy is distributed over a much larger volume than luminous matter.

In general, dark matter makes up about 85% of the universe's total matter, but it does not interact with electromagnetic force. As a result, it cannot be seen directly. In addition, it is referred to as cold dark matter (CDM), which means it moves at a slow pace. This is in stark contrast to the luminous matter, which is found in the disk of the galaxy, which is very concentrated and visible.

Dark matter is influenced by the pressure created by the gas and stars in a galaxy. If dark matter were to interact with luminous matter, it would collapse to form a disk in the galaxy's center. However, the pressure of the gas and stars prevents this from occurring, causing the dark matter to be spread over a much larger volume than the luminous matter.

The pressure of the gas and stars, in turn, is determined by the temperature of the gas and stars. When the temperature decreases, the pressure decreases, causing the dark matter to be distributed over a much larger volume. This explains why dark matter in a galaxy is distributed over a much larger volume than luminous matter.

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"An electron in a 1D box has a minimum energy of 3 eV. What is
the minimum energy if the box is 2x as long?
A. 3/2 eV
B. 3 eV
C 3/4 eV
D. 0 eV"

Answers

We are given the minimum energy of an electron in a 1D box is 3 eV and we need to find the minimum energy of the electron if the box is 2x as long.The energy of the electron in a 1D box is given by:E = (n²π²ħ²)/(2mL²)Where, E is energy,n is a positive integer representing the quantum number of the electron, ħ is the reduced Planck's constant,m is the mass of the electron and L is the length of the box.

If we increase the length of the box to 2L, the energy of the electron will beE' = (n²π²ħ²)/(2m(2L)²)E' = (n²π²ħ²)/(8mL²)From the given data, we know that the minimum energy in the original box is 3 eV. This is the ground state energy, so n = 1 and substituting the given values we get:3 eV = (1²π²ħ²)/(2mL²)Solving for L², we get :L² = (1²π²ħ²)/(2m×3 eV)L² = (1.85×10⁻⁹ m²/eV)Now we can use this value to calculate the new energy:E' = (1²π²ħ²)/(8mL²)E' = (3/4) (1²π²ħ²)/(2mL²)E' = (3/4)(3 eV)E' = 2.25 eV. Therefore, the minimum energy of the electron in the 2x longer box is 2.25 eV. Hence, the correct option is C) 3/4 eV.

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Fighter aircraft 1 is on an aircraft carrier in the Atlantic, at what speed (in knots) must the aircraft carrier travel so that the aircraft's takeoff roll coincides with the runway length L?
Indications:
Ignore the ground effect.
Use the given density
Gravity 9.81m/s^2
Use as many figures as your calculator allows for your calculations.
Enter your result without units or spaces with 4 figures after the decimal point.
Aircraft 1
W in N 9345
S in m^2 6.745
T max in N 3519
Cd0 0.032
K 0.07
μ 0.02
rho in kg/m^3 1.225
CL max 1.4
CL,Lo 0.8 CL max
VLo 1.2 Vs
L in m 270.5306

Answers

The aircraft carrier must travel at a speed of approximately 34.7991 knots for the aircraft's takeoff roll to coincide with the runway length.

To calculate the speed (in knots) at which the aircraft carrier must travel for the aircraft's takeoff roll to coincide with the runway length, we can use the following formula:

V = (2 * W / (rho * S * CL * L))^0.5

Where:

V is the velocity of the aircraft carrier in knots

W is the weight of the aircraft in Newtons

rho is the density in kg/m^3

S is the wing area in m^2

CL is the lift coefficient

L is the runway length in meters

Plugging in the given values:

W = 9345 N

rho = 1.225 kg/m^3

S = 6.745 m^2

CL = 0.8 * 1.4 (CL max) = 1.12

L = 270.5306 m

V = (2 * 9345 / (1.225 * 6.745 * 1.12 * 270.5306))^0.5

Calculating this expression yields:

V ≈ 34.7991 knots

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A wheel, starting from rest, rotates with a constant angular acceleration of 2.50rad/s 2 . During a certain 2.00 s interval, it turns through 10.4 rad. (a) How long had the wheel been turning before the start of the 2.00 s interval? (b) What was the angular velocity of the wheel at the start of the 2.00 sinterval? (a) Number Units (b) Number Units

Answers

From the calculations we can see that;

1) The time is  2.88 s

2) The angular velocity is  7.20 rad/s

What is angular acceleration?

We have that;

θ = ωo * t + (1/2) * α*[tex]t^2[/tex]

θ = angular displacement (10.4 rad)

ωo = initial angular velocity (This is zero since it started from rest)

t = time interval (2.00 s)

α = angular acceleration (2.50 [tex]rad/s^2[/tex])

We have;

[tex]10.4 rad = (1/2) * 2.50 rad/s^2 * t^2[/tex]

t =  2.88 s

Again;

ω = ω0 + α * t

Substituting the values;

ω = 0 + 2.50 rad/s^2 * 2.88 s

ω = 7.20 rad/s

Thus these are the required values.

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Q12. Person A and B both lift an object of 50 kg to a height of 2 m. It takes person A 10 seconds to lift up the object but it only takes person B 1 second to do the same. (a) How much work do A and B perform? (b) Who is more powerful? Prove. 1 mark

Answers

By comparing the power generated by Person A and Person B, we can determine who is more powerful in terms of work .

In this scenario, Person A and Person B both lift an object of 50 kg to a height of 2 m. Person A takes 10 seconds to lift the object, while Person B only takes 1 second. The goal is to determine how much work Person A and Person B perform and determine who is more powerful.

(a) To calculate the work done by Person A and Person B, we can use the formula:

Work = Force × Distance

The force required to lift the object is equal to its weight, which can be calculated using the formula:

Weight = Mass × Acceleration due to gravityIn this case, the mass of the object is 50 kg, and the acceleration due to gravity is approximately 9.8 m/s^2.

The distance lifted is 2 m.Work done by Person A = Force (A) × Distance = (Weight × Distance) = (Mass × Acceleration due to gravity) × Distance

Work done by Person B = Force (B) × Distance = (Weight × Distance) = (Mass × Acceleration due to gravity) × Distance

(b) To determine who is more powerful, we can compare the power generated by Person A and Person B. Power is defined as the amount of work done per unit time:

Power = Work / Time

Person A's power = Work done by Person A / Time taken by Person A

Person B's power = Work done by Person B / Time taken by Person B

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A velocity measurement of an a-particle has been performed with a precision of 0.01 mm/s. What is the minimum uncertainty in its position (Ax)? Hint Ax >|| mm.

Answers

The minimum uncertainty in the position of the α-particle (Ax) is greater than or equal to [tex]1.66 x 10^-31[/tex]m.

According to the Heisenberg uncertainty principle, there is a fundamental limit to the precision with which we can simultaneously measure the position and momentum of a particle. The uncertainty principle states that the product of the uncertainties in position (Δx) and momentum (Δp) must be greater than or equal to a certain value.

In this case, we are given the precision in velocity measurement of the α-particle, which is 0.01 mm/s. To determine the minimum uncertainty in its position (Δx), we can use the following relation:

Δx * Δp ≥ h/4π

where h is the Planck constant.

Since we are given the precision in velocity measurement (Δv), we can approximate it to be equal to the uncertainty in momentum (Δp). Therefore, we have:

Δx * Δv ≥ h/4π

To find the minimum uncertainty in position (Δx), we need to rearrange the equation:

Δx ≥ h/(4π * Δv)

Substituting the values:

Δx ≥ (6.626 x [tex]10^-34[/tex] J*s) / (4π * Δv)

Δx ≥ (6.626 x [tex]10^-34[/tex] J*s) / (4π * 0.01 mm/s)

Δx ≥ (6.626 x[tex]10^-34[/tex]  J*s) / (4π * 0.01 x [tex]10^-3[/tex] m/s)

Δx ≥ 1.66 x [tex]10^-34[/tex] m

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McKenna Motors is expected to pay a $3 per-share dividend at the end of the year (D1 = $3). The stock sells for $23 per share and its required rate of return is 21.4 percent. The dividend is expected to grow at a constant rate, g, forever. What is the growth rate, g, for this stock? 8.36% 8.26%8.16%8.06%7.96% MC 2 Samir (who is standing on the ground) starts his stopwatch at the instant that Maria flies past him in her spaceship. According to Maria, at the instant that Samir's stopwatch reads 16.0 s, Maria's stopwatch reads 20.0 s. According to Samir, at the instant that Maria's stopwatch reads 20.0 s, Samir's stopwatch reads A. 16.0 s B. 20.0 s C. 25.0 s D. none of the above Each matrix represents the vertices of a polygon. Translate each figure 5 units left and 1 unit up. Express your answer as a matrix.[0 1 -4 0 3 5] How many acres are in a description reading, "The NW of the SE and the S of the SW of the NE of Section 4"? suppose that p and q are statements so that p q is false. find the truth values of each of the following. p true false q true false ~p q true false p q true false q p tr A question about game theoryGrade Gambles: Two students, 1 and 2, took a course with a professor whodecided to allocate grades as follows: Two envelopes will each include a gradegi {A, B, C, D, F}, where each of the five options is chosen with equalprobability and the draws for each student i {1, 2} are independent. Thepayoffs of each grade are 4, 3, 2, 1, and 0, respectively. Assume that the gameis played as follows: Each student receives his envelope, opens it, and observeshis grade. Then each student simultaneously decides if he wants to hold on tohis grade (H) or exchange it with the other student (X). Exchange happensif and only if both choose to exchange. If an exchange does not happen theneach student gets his assigned grade. If an exchange does happen then thegrades are bumped up by one. That is, if student 1 had an initial grade of Cand student 2 had an initial grade of D, then after the exchange student 1 willget a C (which was student 2s D) and student 2 will get a B (which wasstudent 1s C). A grade of A is bumped up to an A+, which is worth 5. a. Assume that student 2 plays the following strategy: "I offer to ex-change for every grade I get. " What is the best response of student 1?b. Define a weak exchange Bayesian Nash equilibrium (WEBNE) as aBayesian Nash equilibrium in which each student i choosessi(gi) = XwheneverE[vi(X, si(gi), gi|gi)] E[vi(H, si(gi), gi|gi)]. That is, given his grade gi and his (correct belief about his) opponentsstrategy si, choosing X is as good as or better than H. In particulara WEBNE is a pair of strategies (s1, s2) such that given s2 student 1offers to exchange grades if exchange gives him at least as much asholding, and vice versa. Find all the symmetric (both students use thesame strategy) WEBNE of this game. Are they Pareto ranked?c. Now assume that the professor suggests modifying the game: every-thing works as before, except that the students must decide if theywant to exchange before opening their envelopes. Using equilibriumanalysis, would the students prefer this game or the original one?d. From your conclusion in (c), what can you say about the statement"more information is always better"? In a short paragraph, offer an example from your life or themedia where you now realize someone ran into problems due to afailure to understand the distinction between S1 and S2. Question 40 1 pts The secretion of ADH results in the formation of a ___________ urine. Writing college-level assignments can be intimidating, but it doesnt have to be. This week, lets have a discussion on writing strategies. For this assignment, write at least 250 words - but not more than 500 words - answering the following:Imagine that you have been asked to speak to your classmates and share your most helpful strategy for college-level writing. What would that strategy be?When you write, what is the difference between writing a paper and writing a discussion post? How does the writing process differ for these two types of assignments? Furthermore, what is the difference between writing an initial discussion post and a response to one of your classmates?Your Discussion should be at least 250 words in length, but not more than 500 words. Use APA citations and references for the textbook and any other sources used. (Last week, you learned how to cite e-books, so be sure to at least cite the textbook in your discussion post this week.) Refer to the UoPeople APA Tutorials in the LRC for help in APA cita Use the Terms & Names list to complete each sentence online or on your own paper.A. War Power ActB. Tet offensiveC. countercultureD. VietnamizationE. Cuban missile crisisF. Twenty-sixth AmendmentG. Gulf of Tonkin ResolutionH. guerrilla warfareI. Bay of Pigs invasionJ. hawksK. Viet CongL. French IndochinaM. CambodiaN. dovesO. domino theoryThe ____ was a confrontation between the United States and the Soviet Union in 1962. The Refill Producers Corp. is a US retail outlet for high-quality peanut oils. One of the major suppliers of peanut oil for the company is a farm in Italy. Refill must pay the Italian farm 5.00 euros per liter of peanut oil it purchases. Refill Producers would like to purchase 7,000 liters of the Italian farms peanut oil next year. Currently, it costs 0.900 euros to purchase 1 US dollar. If the exchange rate remains constant, how much will it cost the Refill Corp. (in US dollars) to purchase the 7,000 liters? If the exchange rate changes so that it costs 0.8599 euros to purchase 1 US dollar, how much will it cost to purchase the 7,000 liters of peanut oil? Show your calculations. After the changes that occur in the brain of an adolescent, the brain will no longer develop. the brain will continue to develop throughout life. the only part of the brain left to develop is the gray Question 12 An object of mass m rests on a flat table. The earth pulls on this object with a force of magnitude mg. What is the reaction force to this pull? O The table pushing up on the object with f A rogue black hole with a mass 24 times the mass of the sun drifts into the solar system on a collision course with earth Review | Constanta Part A How far is the black hole from the center of the earth when objects on the earth's surface begin to lift into the air and "Tail" up into the black hole? Give your answer as a multiple of the earth's radus Express your answer using three significant figures. VAZO ? Submit Request Answer Re Please explain in depth the strengths and weaknesses of eachresearch study design. (Qualitative Descriptive, Case Study, andNarrative) "Your Engine or Mine" is a local manufacturer of four-stroke single-cylinder engines in College Station. This year (year 1), the cost for machining the engine block is $600. The company expects this cost to decrease based on a new law passed by the US Congress. If the cost in year two and each year thereafter decreases by $50, what is the equivalent annual cost for four years at an interest rate of 10% per year compounded quarterly? A pressure epiphysis is located at the occurs and is where bone A traction epiphysis is located where and is subjected to IL 4. Verbal Disputes Detecting Bias 238 form of inference: what looks. spia niret account, then that argumentation is biased. cm & fc clefir neig roce term argu qur from bias are the following: geographical regions covered in the program, and it clearly expressed a point of view on environmental issues favorable to the interests of the loggers. After the video was played to one class for a while, one observant child said, "Hey, it's a commercial!" 2. Evaluate how one should react critically to the claims made in the following cases. (a) During the dialogue on tipping, let's suppose that Helen argues as follows. HELEN: Look, Bob, 1 happen to know that you are a public relations consultant who has been hired by the Union of Restaurant Service Providers as part of their campaign to promote tipping. Your argu- ments in favor of tipping as a good practice should not be taken at face value. (b) A scientific report predicted staggering economic losses and unem- ployment if a ban on whiskey bottles made from vinyl chloride was put into effect by the U.S. Government. The report was produced by Arthur D. Little, a company hired by polymer industry officials (Proctor, Cancer Wars, p. 103). (c) A scientific policy research study based on a computer model showed that if advertising were taxed in Minnesota, not only the advertising industry but the state's entire economy would be dam- aged. The study was sponsored by the Communications Industry Coalition, an industry group (Cynthia Crossen, Tainted Truth: The Manipulation of Fact in America (New York: Simon & Schuster, 1994), p. 139). the critic in such a case, called the argument from bias, has the following that it is not taking the evidence on both sides of the issue into If a sequence of argumentation used in a dialogue shows indications The sequence of argumentation in this case shows such indications, Therefore the sequence of argumentation in this case is biased. The critical questions appropriate for use in responding to the argument 1. What is the context of dialogue, and in particular, is it a type of dia- logue that requires an argument to take evidence on both sides of an 2. What is the evidence for the charge that the argument is biased? How the argument from bias is properly used in evaluating an argument in a given case is by giving a reduction in plausibility to the weight of plausibility initially accorded to the given sequence of argumentation. The criticism assumes that the argument was supposed to be part of a particular type of dialogue, such as a critical discussion. In certain types of dialogue, such as a persuasion dialogue, it is important that an arguer takes the arguments on both sides of an issue into account and does not just automatically push ahead with the arguments for the side she advocates, completely ignoring or routinely discounting and rejecting the arguments for the other side. In other words, an argument is more plausible if it is based on a consideration of all the evidence in a case, on both sides of the issue, than if it is pushing only for one side and ignoring all the evidence, even if it may be good evidence, on the other side. So if an argument is biased, that is, if it pushes only for one side, we discount that argument as being of less worth. But we have to be very careful to realize that just because an argument is one-sided, it should not mean that it is worthless or that we should always or completely reject it. Even so, recognition of bias can be very important in how we judge an argument. issue into account? FOUR bids mon choic Verbal Disputes In a dialogue the point of view of the one side is opposed to that of the other side. The dialogue is supposed to resolve this disagreement by having each side put forward arguments. But in some instances the disagreement can be impossible to resolve this way because their parties are not arguing about the same thing. Their disagreement is merely verbal, meaning that they are using a key word differently. For example, consider the following dialogue. EXERCISE 63 1. Evaluate the argument in the following case. A videotape on trees and the environment was distributed free to teachers in the public school system as an educational tool for use in classes on geography and the environment. However, the video was produced by a logging company that had a large financial stake in the Carly: Derek finally got rid of that old Toyota of his and bought a new car. He's driving a new Honda now. Levon: No, Derek didn't buy himself a new car. That Honda is a good three years old. Solve the system by substitution. y = 5.6x + 13.16 y = - 2x - 2.8 The solution is (Simplify your answer. Type an ordered pair.) Which statement regarding gene expression is true? Gene expression in vertebrates is a predetermined result of mitotic lineages. O Environmental factors, including experience, affect gene expression and thus cell differentiation. In vertebrates, gene expression in neural cells is independent of signals from the external environment. O In neurogenesis, cell differentiation takes place before gene expression. 2 pts Steam Workshop Downloader