The normal force (F⃗n) exerted by the horizontal table on the 3.5 kg book that sits at rest is equal to the weight (mg) of the book is 34.335 N.
The weight of the book is equal to 3.5 kg * 9.8 m/s2 = 34.3 N.
Therefore, the normal force (F⃗n) of the table on the book is equal to 34.3 N.
The normal force that a horizontal table exerts on a 3.5 kg book that sits at rest is equal to the gravitational force acting on the book. This force is given by the product of the mass of the book and the acceleration due to gravity. Therefore, the normal force is calculated as follows:
Fnormal = mg
Where:
Fnormal: Normal force
m: Mass of the book
g: Acceleration due to gravity
Substituting the given values, we have:
Fnormal = (3.5 kg)(9.81 m/s²)
Fnormal = 34.335 N
Therefore, the normal force exerted by the table on the book is 34.335 N.
For more such questions on force , Visit:
https://brainly.com/question/12785175
#SPJ11
From which terminal is electricity presumed to flow in conventional thought? How would the flow of electricity through the circuit be affected if the connections to the battery terminal are exchanged?
Answer: In conventional thought, electricity is presumed to flow from the positive terminal of a battery, through a circuit, and back to the negative terminal of the battery. If the connections of the battery terminals are exchanged, the flow of the electricity through the circuit would be reversed. The electrons would flow from the negative end of the circuit, and into the positive terminal of the battery. This is known as reverse polarity, and it can cause damage to electrical components that are not designed to handle current in this direction.
a copper wire has a resisrtance of 200 ohms. a second copper wire with twice the cross-sectional area and the same lenghthj would have a resisrtance of
The resistance of a wire is inversely proportional to the cross-sectional area of the wire. So, the resistance of the second wire is one-half of the resistance of the first wire, which is 100 ohms.
Resistance of a copper wire with a cross-sectional area and length.The resistance of a copper wire with a cross-sectional area and length can be calculated using the formula:R=ρL/A
Substituting the given values of resistance R and cross-sectional area A for the first copper wire, we get:R₁ = ρL/A ... (1)where ρ is the resistivity of copper, L is the length of the wire and A is the cross-sectional area of the wire.The resistance of the second copper wire with twice the cross-sectional area A but the same length L can be calculated using the same formula as:R₂ = ρL/2A = (1/2)(ρL/A) ... (2)
Substituting the value of R₁ from equation (1) in equation (2), we get:R₂ = (1/2)(R₁) = 1/2 x 200 = 100Ω
Therefore, the resistance of the second copper wire would be 100 ohms.
More on resistance: https://brainly.com/question/12079414
#SPJ11
which of the following have wavelengths that are longer than visible light? question 3 options: 1) gamma rays 2) ultraviolet (uv) light 3) infrared radiation 4) x rays 5) a, b, and d
All of the following have wavelengths that are longer than visible light: Gamma Rays, Ultraviolet (UV) Light, Infrared Radiation, and X Rays (A, B, and D).
Gamma Rays have the shortest wavelength of all four, with a range of 10 picometers to 0.01 nanometers. Ultraviolet (UV) Light has a range of 10 nanometers to 400 nanometers. Infrared Radiation has a range of 700 nanometers to 1 millimeter. Finally, X Rays have a range of 0.01 nanometers to 10 nanometers.
All four of these forms of radiation are used for various applications, such as medical imaging and astronomical observations. Gamma Rays are used for medical imaging, such as PET scans, and are also used to study the structure of atoms and molecules. Ultraviolet (UV) Light is used in tanning beds and is also used to detect organic compounds in astronomical observations. Infrared Radiation is used to detect objects in the sky, such as stars and planets, as well as to detect gas clouds. Finally, X Rays are used in medical imaging, such as CT scans, and are also used to study the structure of atoms and molecules.
In conclusion, Gamma Rays, Ultraviolet (UV) Light, Infrared Radiation, and X Rays all have wavelengths that are longer than visible light.
For more such questions on Wavelengths.
https://brainly.com/question/12037899#
#SPJ11
What process is water vapor released into the atmosphere?
Answer:Evaporation
Explanation:
Isabella makes an electromagnet by wrapping copper wire around an iron bolt and then connecting each end of the wire to a battery. She observes that the more times that she wraps the copper wire around the bolt, the more paper clips her magnet can pick up. What does she conclude in this experiment?
Wrapping more copper wire around the bolt increases the length of the bolt.
Wrapping more copper wire around the bolt increases the density of copper.
Wrapping more copper wire around the bolt increases the mass of the battery.
Wrapping more copper wire around the bolt increases the strength of her electromagnet.
Isabella concludes that wrapping more copper wire around the bolt increases the strength of her electromagnet. The copper wire, when connected to a battery, creates a magnetic field around the iron bolt
What is magnetic ?Magnetic is a material or object that produces a magnetic field. A magnetic field is a force that attracts or repels certain materials, such as iron, nickel, and cobalt. Magnets can be found in a variety of shapes and sizes, including bar magnets, horseshoe magnets, and disc magnets.
Magnets have two poles, a north pole and a south pole, which are opposite in polarity. Like poles repel each other, while opposite poles attract. When a magnet is broken into pieces, each piece will have its own north and south pole.
Magnets are used in a variety of applications, such as in generators, motors, speakers, and magnetic storage devices like hard drives. They are also used in medical imaging technologies, such as magnetic resonance imaging (MRI), which uses strong magnetic fields to produce detailed images of the inside of the body.
To know more about magnets visit :
https://brainly.com/question/13026686
#SPJ1
Three infinite straight wires are fixed in place and aligned parallel to the z-axis as shown. The wire at (x,y) = (-15.5 cm, 0) carries current l1-3.4 A in the negative z-direction. The wire at (x,y) (15.5 cm, 0) carries current I2 = 0.5 A in the positive z-direction. The wire at (x.y) = (0, 26.8 cm) carries current I3 = 5.2 A in the positive z-direction. 1. What is Bx(0,0), the x-component of the magnetic field produced by these three wires at the origin? 2). What is By(0,0), the y-component of the magnetic field produced by these three wires at the origin? 3). What is Fx(1), the x-component of the force exerted on a one meter length of the wire carrying current I1? 4). What is Fyl), the y-component of the force exerted on a one meter length of the wire carrying current I1?
5). What is Fx(2), the x-component of the force exerted on a one meter length of the wire carrying current l2?
The x-component of the magnetic field produced by these three wires at the origin, Bx(0,0), is equal to zero since the wires are aligned parallel to the z-axis.
The y-component of the magnetic field produced by these three wires at the origin, By(0,0), is equal to μ0/2π times the sum of the currents, or 0.8 x 10-7 T.
The x-component of the force exerted on a one meter length of the wire carrying current I1, Fx(1), is equal to the product of the current, I1, and the y-component of the magnetic field, By(0,0). This is equal to -2.7 x 10-7 N.
The y-component of the force exerted on a one meter length of the wire carrying current I1, Fy(1), is equal to the product of the current, I1, and the x-component of the magnetic field, Bx(0,0). Since Bx(0,0) is equal to zero, the force is equal to zero.
The x-component of the force exerted on a one meter length of the wire carrying current I2, Fx(2), is equal to the product of the current, I2, and the y-component of the magnetic field, By(0,0). This is equal to 0.4 x 10-7 N.
In conclusion, the x-component of the magnetic field produced by these three wires at the origin, Bx(0,0), is equal to zero. The y-component of the magnetic field produced by these three wires at the origin, By(0,0), is equal to 0.8 x 10-7 T.
The x-component of the force exerted on a one meter length of the wire carrying current I1, Fx(1), is equal to -2.7 x 10-7 N. The y-component of the force exerted on a one meter length of the wire carrying current I1, Fy(1), is equal to zero. The x-component of the force exerted on a one meter length of the wire carrying current I2, Fx(2), is equal to 0.4 x 10-7 N.
Know more about magnetic field here
https://brainly.com/question/23096032#
#SPJ11
What must happen to form a solution?A.A substance must dissolve in another substance.B.A solvent must change into a solute.C.All compounds within a material must be identical.D.Two substances must combine chemically.
D. Two substances must combine chemically.
What exactly are an element or compound?One type of atom makes up an element, which is a white crystalline solid that cannot be divided into more than one component. Compounds are pure substances created by mixing two or more substances in a specific mass ratio.
Exists a compound for each element?Chemically pure substances that can be found in nature are called elements and compounds. An component is an object made of the same kinds of atoms as a compound, which is how they differ from one another.
It is common for the disorder to develop and the entropy of the system to increase as a result of the dispersion of molecules, atoms, and ions of one sort during the creation of a solution throughout a second substance.
To know more about Compound visit:
brainly.com/question/19458442
#SPJ1
A 2000 kg car traveling at a speed of 37 m/s skids to a halt on wet concrete where μk
= 0.50.
Stopping distance of a 2000 kg car traveling at 37 m/s on wet concrete with μk = 0.50 is 141.95 meters.
How to calculate stopping distance?To solve this problem, we need to use the formula for the stopping distance of a car on a slippery surface:
d = (v² / 2μk g)
where:
v - is the car's initial velocity.
d - is the stopping distance
μk - is the coefficient of kinetic friction between the car's tires and the road surface
g - is the acceleration due to gravity (9.81 m/s²)
Substituting the given values, we get:
d = (37² / (2 * 0.50 * 9.81)) = 141.95 meters
Therefore, the stopping distance of the car is 141.95 meters.
To learn more about Stopping distance, visit:
https://brainly.com/question/14412650
#SPJ1
Complete question:
A 2000 kg car traveling at a speed of 37 m/s skids to a halt on wet concrete where μk = 0.50. What is Stopping distance?
if a test point is marked 5 volts and a sedond test point is marked -3.3 volts. what voltage would you expect to read between the two points if the refernece lead is on the lowest voltage
The 5-volt reading we can expect between the two test points if the reference lead is on the lowest voltage.
The given data is as follows:
The first test marked voltage = 5 volts
The second test marked voltage = -3.3 volts
Let us assume that the two test points are there is a conductive track between them, the voltage between the two points can be calculated using the voltage difference between the two test points.
The voltage difference between the two test points is calculated as:
5 volts - (-3.3 volts) = 8.3 volts
If the reference lead is on the lowest voltage, It means that the negative side of the voltmeter is attached to the test point with the lower voltage which is -3.3 volts.
The voltage difference between the two test points is
8.3 volts - 3.3 volts = 5 volts
Therefore we can conclude that the 5-volt reading we can expect between the two test points.
To learn more about voltage
https://brainly.com/question/14291865
#SPJ4
a particle travels 17 times around a 16-cm radius circle in 38 seconds. what is the average speed (in m/s) of the particle?
A particle travels 17 times around a 16-cm radius circle in 38 seconds.The average speed of the particle is approximately 14.21 m/s.
The particle's average speed can be calculated by dividing the distance travelled by the time taken.
The distance travelled by the particle is equal to the circumference of the circle, which is given by 2πr, where r is the radius of the circle. Therefore, the distance travelled by the particle is given by:
Distance travelled = 17 × 2π × 16 cm
= 17 × 32π cm
The time taken by the particle to travel this distance is given as 38 seconds.Therefore, the average speed of the particle is given by:
Average speed = Distance travelled /Time taken
= (17 × 32π) cm/38 s
= 17 × 32 × π/38 m/s
= 14.21 m/s (rounded to two decimal places).
for such more question on average speed
https://brainly.com/question/6504879
#SPJ11
a wire has a length l1 and a cross sectional surface area of a1. if you double the length of this wire, and reduce its surface area to 1/3 its original value, by how much does the resistance change?
A wire has a length of l1 and a cross-sectional surface area of a1 and if we double the length of this wire, and reduce its surface area to 1/3 of its original value. The resistance change by: 6 times
The resistance change can be calculated using the formula R = ρl / a, where ρ is the resistivity of the wire, l is the length of the wire, and a is the cross-sectional area of the wire. If we double the length of the wire and reduce its surface area to 1/3 of its original value, we can find the new resistance using the same formula. Let's call the new length of the wire l2 and the new cross-sectional area a2.
So, we have:
l2 = 2l1 (double the length)
a2 = (1/3)a1 (reduce the surface area to 1/3 its original value)
Now we can calculate the new resistance:
[tex]R2 = ρl2 / a2[/tex]
[tex]R2 = ρ(2l1) / [(1/3)a1][/tex]
[tex]R2 = 6ρl1 / a1[/tex]
So the new resistance is 6 times the original resistance. This means that the resistance changes by a factor of 6 when the length of the wire is doubled and the surface area is reduced to 1/3 of its original value.
To know more about resistance refer here:
https://brainly.com/question/30799966#
#SPJ11
what is the angular momentum of a 0.205 kg k g ball rotating on the end of a thin string in a circle of radius 1.45 m m at an angular speed of 11.6 rad/s r a d / s ?
The angular momentum of the ball rotating on the end of a thin string in a circle of radius 1.45 m m at an angular speed of 11.6 rad/s r a d / s is 6.07 × 10⁻⁶ kg m²/s.
Angular momentum is the quantity of motion that describes the rotation of a body about a fixed axis. It is a vector quantity that is the cross product of the position vector and the momentum vector.
The angular momentum of a 0.205 kg k g ball rotating on the end of a thin string in a circle of radius 1.45 m m at an angular speed of 11.6 rad/s r a d / s can be calculated as follows:
L = IωL = Iω
Here, L is angular momentum,
I is the moment of inertia of the ball, and
ω is the angular velocity of the ball.
The moment of inertia of a uniform sphere can be calculated as follows:
I= (2/5)mr²I = (2/5)mr²
Here, m is the mass of the sphere, and r is the radius of the sphere.
Therefore, the moment of inertia of the ball is given by:
I = (2/5)mr²I = (2/5) × 0.205 × (0.00145)²I = 5.23 × 10⁻⁷ kg m²
Substituting this value into the expression for angular momentum:
L = IωL = 5.23 × 10⁻⁷ × 11.6L = 6.07 × 10⁻⁶ kg m²/s.
for such more question on angular momentum
https://brainly.com/question/4126751
#SPJ11
numeade how much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 n?
Work done on the can of soup by the attendant is 3J.
A supermarket checkout attendant can do a considerable amount of work on a can of soup when they apply a force of 5.00 N over a distance of 0.600 m.
Work is defined as the product of force and displacement and is calculated by multiplying the force applied (5.00 N) by the distance moved (0.600 m). Therefore, the work done on the can of soup is:
5.00 N * 0.600 m = 3.00 Nm.
To understand this concept further, it's important to know that the unit of work, joule (J), is equal to 1 Newton meter (Nm). So, the 3.00 Nm of work done on the can of soup is also equal to 3.00 J.
The amount of work done on the can of soup by the checkout attendant is directly proportional to the amount of force and displacement applied. If either of the two is increased, then the total work done will increase.
For example, if the checkout attendant applies a force of 10.00 N over a distance of 0.600 m, then the total work done will be 10.00 N * 0.600 m = 6.00 Nm, or 6.00 J.
In conclusion, a supermarket checkout attendant can do a considerable amount of work on a can of soup when they apply a force of 5.00 N over a distance of 0.600 m. This work is equal to 3.00 Nm or 3.00 J.
To know more about work, refer here:
https://brainly.com/question/13662169#
#SPJ1
for a resistor, what resistance corresponds to a short circuit? for an uncharged capacitor, what value capacitance corresponds to a short circuit? explain your answers. repeat for an open circuit.
Zero resistance or capacitance value corresponds to a short circuit, which is the travel of current along an unintended path.
True short circuits happen when electrical circuit wires or wire connections are exposed or broken; they need to be identified and addressed as soon as possible. When there is a low resistance connection between two conductors supplying electricity to a circuit, a short circuit happens.
A "ideal" open circuit would have zero capacitance. A capacitor with 0 capacitance has no electrical charge accumulating on its plates or conductors. Zero capacitance means it can become fully charged as soon as the current is flown through it.
The capacitance C of a capacitor is defined as the ratio of the maximum charge Q that may be held in a capacitor to the applied voltage V across its plates. In other terms, capacitance is the capacity of the device to store the most charge per volt:
C = Q/V.
To know more about capacitance, refer:
https://brainly.com/question/25656682
#SPJ4
gold has a specific gravity of almost 20. a 5-gallon bucket of water weighs 40 pounds. how much would a 5-gallon bucket of gold weigh? hint: if a mineral were twice as dense as water, its specific gravity would be two. water has a specific gravity of 1.
A 5-gallon bucket of gold would weigh 86.84 pounds.
A five-gallon bucket of water weighs 40 pounds. Gold has a specific gravity of almost 20.
If a mineral was twice as dense as water, its specific gravity would be two.
Water has a specific gravity of 1.
To determine the weight of a 5-gallon bucket of gold, you need to determine the weight of 5 gallons of water first.One gallon of water weighs approximately 8.33 pounds; hence 5 gallons of water weigh 41.65 pounds.
Now, divide the weight of 5 gallons of water (41.65) by the specific gravity of gold (20):41.65/20 = 2.0825
The weight of a five-gallon bucket of gold would be 2.0825 times greater than that of a five-gallon bucket of water, which equals to 86.84 pounds (40 pounds + 46.84 pounds).
Therefore, a 5-gallon bucket of gold would weigh approximately 86.84 pounds.
To learn more about specific gravity:
https://brainly.com/question/9638888#
#SPJ11
Convert the following to Fahrenheit 1) 10° C 50 °F = 1.8 x 10 +32 2) 30° C 3) 40° C
The corresponding temperature in Fahrenheit is 10° C = 50° F, 30° C = 86° F and 40° C = 104° F.
What is the corresponding temperature in Fahrenheit?In the Celsius temperature scale, water freezes at 0°C and boils at 100°C, while in the Fahrenheit temperature scale, water freezes at 32°F and boils at 212°F.
The conversion formula for Celsius to Fahrenheit is F = 1.8 x C + 32, where;
F is the temperature in Fahrenheit and C is the temperature in Celsius.So, to convert Celsius to Fahrenheit, we simply need to plug in the given Celsius temperature value into the formula F = 1.8 x C + 32, and then solve for F.
Let's take the first example of 10°C:
F = 1.8 x C + 32
F = 1.8 x 10 + 32
F = 18 + 32
F = 50°F
Therefore, 10°C is equivalent to 50°F in Fahrenheit.
Similarly, we can apply this formula to the other given Celsius temperature values of 30°C and 40°C to convert them to Fahrenheit.
30° C = 86° F (F = 1.8 x 30 + 32)
40° C = 104° F (F = 1.8 x 40 + 32)
Learn more about Fahrenheit temperature here: https://brainly.com/question/30391112
#SPJ1
Seventh grade QQ.4 Commas with coordinate adjectives 5L5
Insert one comma to separate the coordinate adjectives.
Typical golf caddie responsibilities include carrying clubs, cleaning balls,
calculating distances and scores, and even replacing the divots-pieces of
grass and dirt that have been cut loose by the swift forceful strikes of golf
clubs.
Answer:
Typical golf caddie responsibilities include carrying clubs, cleaning balls,
calculating distances and scores, and even replacing the divots - pieces of
grass and dirt that have been cut loose by the swift, forceful strikes of golf
clubs.
Two loud speakers are 1.60 m apart. A person stands 3.00 m from one speaker and 3.50 m from other speaker.
What is the lowest frequency at which destructive interference will occur at this point if the speakers are in phase?
Questions are in photo. Need actual answers and worked out. Pls and thank you.
Based on the above, 3.75 x 10¹² electrons have been added to the glass rod.
What is the electrons about?To determine the number of electrons added to the glass rod, we need to know the charge of a single electron. One electron has a charge of -1.6 x 10⁻¹⁹ C.
Charge added to the glass rod = -0.6 μC = -0.6 x 10-⁶ C
Number of electrons added to the glass rod = (charge added to the rod) / (charge of a single electron)
Number of electrons added to the glass rod = (-0.6 x 10⁻⁶ C) / (-1.6 x 10⁻¹⁹C) = 3.75 x 10¹² electrons
Therefore, 3.75 x 10¹² electrons have been added to the glass rod.
For the second question, we can use Coulomb's law to determine whether the pith ball and metal plate are attracted or repulsed. Coulomb's law states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them where
The force between the pith ball and the metal plate is:
F = k x q1 x q2 / r²
Pugging the value in the formula, the answer will be: F = -0.135 N.
The negative sign indicates that the force is attractive, so the pith ball and metal plate are attracted to each other.
For the third question, the force on the negatively charged object from problem 2 is 0.135 N, in the direction towards the positively charged pith ball.
For the fourth question, the force on the positively charged object from problem 2 is also 0.135 N, in the direction towards the negatively charged metal plate.
Read more about electrons here:
https://brainly.com/question/860094
#SPJ1
See text below
You rub a glass rod with a piece of fur. If the rod now has a charge of -0.6 μC, how many electrons have been added to the rod?
A suspended pith ball possessing +10 μC of charge is placed 0.02 m away from a metal 'plate possessing -6 μC of charge. Are these objects attracted or repulsed?
What is the force on the negatively charged object from problem 2?
• What is the force on the positively charged object from problem 2?
the grand coulee dam is 1270. m long and 170. m high. the electrical power output from generators at its base is approximately 2000. mw. how many cubic meters of water must flow from the top of the dam per second to produce this amount of power if 92% of the work done on the water by gravity is converted to electrical energy? (each cubic meter of water has a mass of 1000. kg .)
Hence, 127.2 m3/s per second is the required water flow rate from the dam's crest.
What is a second?A international unit system (SI) defines the metre per second as the speed of the a body covering a metre in one second, which is measured in terms of the both speed (a scalar number) and speed (a vector quantity with direction and magnitude). m/s, m/s1, m/s, or ms are the SI unit symbols.
How do you calculate a second?Distance times time is the same for all objects, including cars, when calculating speed and distance. So, a math becomes (60 x 5280) (60 x 60) ≈ 88 meters per second when trying to figure out how fast an automobile is traveling at 60 miles per hour.
To know more about per second visit:
https://brainly.com/question/17125529
#SPJ1
how could apply the mechanics of sound wave production from a guitar string to construct a simple model for human vocal cords?
To apply the mechanics of sound wave production from a guitar string to construct a simple model for human vocal cords, we need to consider the vibration and resonance of both. The vibration of a guitar string and the vocal cords is similar because they both produce sound by vibrating back and forth.
What is the mechanics of sound wave production?The mechanics of sound wave production are the generation and propagation of sound waves through space. When a guitar string vibrates, it generates sound waves that travel through the air and reach our ears. The frequency and amplitude of the sound waves determine the pitch and volume of the sound.
Take a long, thin piece of material, such as a rubber band or a strip of plastic.2. Stretch it taut between two points, such as two pencils or two pegs.3. Pluck the string with your finger and observe the vibration.4. Vary the tension and length of the string to produce different pitches.
Read more about sound :
https://brainly.com/question/1199084
#SPJ11
suupose that an aircraft's take-off speed is 120 moh at sea level.. what would be the take off speed for this aircraft at denver?
The takeoff speed for this aircraft at Denver would be approximately 116.85 moh if the speed of takeoff of the aircraft at sea level is 120 moh.
When an aircraft takes off, the atmosphere has a significant impact on its speed. In Denver, the air is thinner than at sea level, and the aircraft's takeoff speed must be adjusted as a result. As altitude rises, air density decreases, so the aircraft's takeoff speed must be increased to compensate.The formula for calculating takeoff speed with respect to altitude is given below:
Takeoff speed at altitude h = Takeoff speed at sea level x √(air density at altitude h / air density at sea level)
We know that the takeoff speed at sea level is 120 moh. Let us assume that air density at Denver is 0.91 times the air density at sea level.Hence, the takeoff speed at Denver can be calculated as:
Takeoff speed at Denver = 120 x √(0.91)≈ 116.85 moh.
Therefore, the takeoff speed for this aircraft at Denver would be approximately 116.85 moh.
More on speed: https://brainly.com/question/13031231
#SPJ11
a rock is thrown upward with a velocity of 13 meters per second from the top of a 38 meter high cliff, and it misses the cliff on the way back down. when will the rock be 11 meters from ground level? round your answer to two decimal places.
The rock will be 11 meters from the ground 2.97 seconds after it is thrown.
Let's start by using the kinematic equation,
h = vit + 0.5a*t^2
where h is the height, vi is the initial velocity, t is the time, and a is the acceleration due to gravity (-9.8 m/s^2).
At the highest point, the rock's velocity will be zero, so we can use this fact to find the time it takes to reach the highest point,
0 = 13 - 9.8*t_highest
t_highest = 1.33 seconds
Now we can use this time to find the height of the rock above the ground,
h = 38 + 131.33 - 0.59.8*(1.33)^2
h = 51.33 meters
So at its maximum height, the rock is 51.33 meters above the ground. To find when it will be 11 meters from the ground,
11 = 51.33 + 0 + 0.5*(-9.8)*t^2
t^2 = (51.33 - 11)/4.9
t^2 = 8.8367
t = 2.97 seconds (rounded to two decimal places)
To know more about velocity, here
brainly.com/question/17333324
#SPJ4
if a 4.5 kg object is dropped from a height of 6.0 m, what will be its velocity when it is halfway toward the ground? (use g
The final answer are velocity of the object when it is midway to the ground is : v = u + at v = 0 + 9.81 x 0.78v = 7.658 m/s= 8.77 m/s (rounded to two decimal places)
At the midpoint, the velocity of the 4.5 kg item dropped from a height of 6.0 m is 8.77 m/s (use g = 9.81 m/s^2).
The weight of the object is the force acting on it that is proportional to its mass. The weight is represented by the formula W=mg. W = 4.5 x 9.81 m/s²W = 44.145 N, where N is the newton.
The object's initial velocity is zero, and it starts to fall. The speed of an object moving with constant acceleration is given by the formula v = u + at, where u is the initial velocity, t is the time taken, and a is the acceleration.
In this instance, the initial velocity u = 0. If the distance is halved, the time taken to reach the midpoint can be computed as follows: t = sqrt (2s / g)t = sqrt (2 x 3 / 9.81)t = sqrt (0.611) t = 0.78 s
The velocity of the object when it is midway to the ground is : v = u + at v = 0 + 9.81 x 0.78v = 7.658 m/s= 8.77 m/s (rounded to two decimal places)
To know more about velocity refer here:
https://brainly.com/question/17127206#
#SPJ11
a woman stands on a scale in a moving elevator. her mass is 66.0 kg, and the combined mass of the elevator and scale is an additional 784 kg. starting from rest, the elevator accelerates upward. during the acceleration, the hoisting cable applies a force of 9030 n. what does the scale read (in n) during the acceleration?
The scale will read 8,996 N during the acceleration.
The force applied to the woman by the scale is the sum of her weight and the weight of the elevator and scale (66.0 kg + 784 kg = 850.0 kg). This can be calculated using the equation
Force = Mass x Acceleration (F = ma).
The acceleration is given by the force applied (9030 N) divided by the total mass (850.0 kg), which gives a result of 10.6 m/s2.
We then multiply this acceleration by the mass of the woman (66.0 kg) to get the force applied to the woman by the scale, which is 696 N.
We then add this to the weight of the elevator and scale (784 kg) to get the total force that the scale reads, which is 8,996 N.
To know more about Force click on below link:
https://brainly.com/question/13191643#
#SPJ11
g a cat with mass 4.50 kg is running at a speed of 6.70 m/s. what is the kinetic energy of the cat?
The kinetic energy of the cat is 177.15 Joules.
The kinetic energy of the cat can be calculated using the formula K = 0.5mv2, where m is the mass and v is the velocity.
The cat has a mass of 4.50 kg and is running at a velocity of 6.70 m/s, so we can substitute these values into the formula to find the kinetic energy:
K = 0.5 * 4.50 kg * (6.70 m/s)2
K = 177.15 Joules
Kinetic energy is the energy possessed by an object due to its motion. It is calculated by multiplying half of the object's mass by its velocity squared.
The cat has a mass of 4.50 kg and is running at a velocity of 6.70 m/s, so its kinetic energy is 177.15 Joules.
to know more about kinetic energy refer here:
https://brainly.com/question/26472013#
#SPJ11
what size conductor is required for a 70a breaker that supplies a 65a noncontinuous load? awg
To determine the appropriate wire size (AWG) for a 70A breaker supplying a 65A non-continuous load, you would need to consider the ampacity of the wire, the length of the run, and the type of conductor insulation.
Based on the NEC (National Electric Code) guidelines, for a 70A breaker supplying a 65A non-continuous load, the minimum recommended wire size would be 6 AWG copper or 4 AWG aluminum.
It's important to note that this recommendation assumes a maximum length of 100 feet and THHN/THWN insulation. If you're using a different insulation type, you'll need to adjust the wire size accordingly.
Additionally, if the run is longer than 100 feet or if there are other factors that could affect the current-carrying capacity of the wire, you should consult a qualified electrician or refer to the NEC for more detailed guidance.
To know more about conductor-
brainly.com/question/18084972
#SPJ4
in an alternating current circuit that contains a resistor a inductor and a capacitor with 120v how do you find current
In an alternating current circuit that contains a resistor, an inductor, and a capacitor with 120V, you can find the current by using Ohm's Law.
Ohm's Law states that the current is equal to the voltage divided by the resistance.
To calculate the resistance in an alternating current circuit, you must take into account the resistor, inductor, and capacitor.
For example, if the resistor has a resistance of 10 ohms, the inductor has a resistance of 5 ohms, and the capacitor has a resistance of 20 ohms, then the total resistance would be 35 ohms.
Therefore, the current in the circuit would be 120V/35 ohms = 3.43A.
To know more about Ohm's Law, refer here:
https://brainly.com/question/1247379#
#SPJ11
according to our textbook, what is the best way to defend ourselves against an asteroid which is on course to collide with the earth in 7 years?
If an asteroid is on a collision course with Earth and is predicted to collide within seven years, the best way to defend ourselves would depend on the size and trajectory of the asteroid.
What is an asteroid ?An asteroid is a small, rocky object that orbits the Sun. Most asteroids are found in the asteroid belt, a region between the orbits of Mars and Jupiter. Asteroids can range in size from a few meters to several hundred kilometers in diameter, with the largest known asteroid being Ceres.
Most asteroids are located in the asteroid belt between Mars and Jupiter, but they can also be found in other parts of the solar system. Some asteroids have orbits that cross the orbit of Earth, and these are known as near-Earth asteroids (NEAs). NEAs are of particular interest because they have the potential to collide with Earth, which could have significant consequences for life on our planet.
Asteroids are believed to be remnants from the early solar system, and their study can provide insights into the formation and evolution of the solar system. In recent years, several space missions have been launched to study asteroids up close, including NASA's OSIRIS-REx mission to asteroid Bennu and the Japanese space.
To know more about Asteroids visit :
https://brainly.com/question/19161842
#SPJ1
a compact car and a large truck have a head-on collision. during the collision, which vehicle, if either, experiences:
In a head-on collision between a compact car and a large truck, the compact car will generally experience more force due to its smaller mass.
A head-on collision, also known as a frontal collision or a lane departure crash, is a form of collision in which two vehicles traveling in opposite directions collide head-on. A compact car is a small passenger car that usually has a shorter length and wheelbase than a mid-size car. A large truck is a commercial motor vehicle with a gross vehicle weight of more than 10,000 pounds. They may be box trucks, tractor-trailers, dump trucks, or other commercial vehicles.
During a head-on collision between a compact car and a large truck, the large truck experiences less damage than the compact car. This is because the compact car experiences a greater force of impact than the large truck.
To know more about head-on collisions, refer here:
https://brainly.com/question/3555603#
#SPJ11