31 Answered Questions for the topic Potential energy

#### Bounce of a ping pong ball vs bounce of other things (How does the material affect ?)?

Yesterday I saw that a ping pong ball bounced nicely on a hard surface but poorly on a mattress.On the contrary ,I saw that other things (a pen for example) bounced poorly on a hard surface but...
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#### Easy physics question, just don't understand the question!

full workings with explanation please, and thanks in advance! :)
---------- A ball is projected vertically upwards from the top of a building which is 300m high. The speed of the ball after 1s is...
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#### Finding the potential of a force

Hi
I have been asked to find the potential V(x) of the force F(x)=k(x-L).
Can anyone help me with this please? Thanks

05/06/18

#### Energies in orbit

A meteor with a mass of 58000 kg falls from an radius of 7.1x10^6 m above the surface of the earth.
a) What is the speed of the meteor just before impact with the surface of the earth?
b)...
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Potential Energy Kinetic Energy

05/03/18

#### what is kinetic energy

i want to know more about kinetic and potential energy

04/26/18

#### What is the minimum energy that is required to take a stationary satellite...

What minimum energy is required to take a stationary 600 kg satellite from the surface of the moon to an altitude of 9.2x10^5 and put it into an orbit with an orbital speed of 1.36x10^3...
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04/02/18

#### If I have been given a graph of potential energy, how do I sketch typical trajectories in the phase plane?

The particle is moving in the x-axis under the action of a conservative force with a potentialenergy V (x).

12/23/17

#### What is the value of n?

A ball is dropped from an height of 1m. After hitting the floor the ball bounces back and reaches half of its previous height. After hitting the ball n times the potential energy of the ball...
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Potential Energy

11/16/17

#### Two bodies A and B of equal mass are kept at heights 20 m and 30 m respectively calculate ratio of their potential energies

mass of A=20 m
mass of B=30 m

Potential Energy

10/20/17

#### What is the electrostatic potential energy (in joules) between an electron and a proton that are separated by 52 pm?

Need to figure this out to at least three significant figures.

#### Laws of Motion related doubt

A uniform chain of length 'l' is placed on a smooth horizontal table, such that half of its length hangs over one edge. It is released from rest, the velocity with which it leaves the tables is...
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#### Energy lost to heat

In an attempt for a physics teacher to explain the conservation of energy to a student, the teacher goes down a 6.0 m high sliding board. At the bottom, he only travels 7.0 m/s. If the mass of the...
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07/27/17

#### Conservation of Energy

A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water.
...
Energy before...
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Potential Energy Physics

04/26/17

#### Potential Energy between charges

A positive charge of 3 nC is placed at the origin and a positive charge of 6.75 nC isplaced on the x-axis 5 cm. A positive test charge of 2 nC is placed on the x-axis adistance d, between these two...
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Potential Energy

02/15/17

#### what gives cars potential energy

what give cars potential enery it is a race car

01/01/17

#### Gravitational Potential energy doubt

Why gravitational potential gradient is negative when a body is taken away from earth? Please resolve my doubt.

Potential Energy

08/26/16

#### electric potential

Consider a uniformly non conducting circular disc . Surface charge density = p and radius of disc = a . Find electric potential at any point on the circurmference and at the centre

#### Fill in the Blank: Potential Energy

A 0.50-kg sphere at the top of an incline has a potential energy of 8.0 joules relative to the base of the incline. Rolling halfway down the incline will cause the sphere's potential energy to be...
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03/17/16

#### More SPE, KE or GPE?

1. Compared to a marble released from a height of .5 m, a marble released from a height of 1 m has:
a) More SPE at the top of the fall
b) More KE at the top of the fall
c) More GPE at the top...
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#### The following questions refer to a pop-up toy with a mass of .35 kg. The toy’s spring compresses .04 m and has a spring constant of 4,500 N.

The following questions refer to a pop-up toy with a mass of .35 kg. The toy’s spring compresses .04 m and has a spring constant of 4,500 N.
1. What is the spring potential energy before the...
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#### Physics Problems (2) : Work & Power

How much power is expended to raise a 300 kg roller coaster car to the top of a 35 m hill in 10 seconds?
How much potential energy does the roller coaster car have at the top of the...
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#### Physics Problems (2) : Work & Power

How much potential energy does 8 million kg of water have as it drops 50 m over Niagara Falls?
If a 8 million kg of water flows over Niagara Falls each second, calculate the power available at...
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#### Physics Problems (2) : Work & Power

A weightlifter lifts a 50 kg barbell 2.5 meters into the air. How much work does she do on a barbell? How much potential energy does the barbell have at the top?
If she lifts the barbell in 2...
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#### Help explaining physics

Question: As the speed of a bicycle moving along a level horizontal surface changes from 2 m/s to 4 m/s, the magnitude of the bicycle's:
Multiple Choice:
a. total energy remains the same
b....
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#### A particle with total energy E in Potential energy region U(x).Motion of the particle is restricted to the region when ? check description

A particle with total energy E in Potential energy region U(x).Motion of the particle is restricted to the region when
options are
(a) U(x)>E
(b) U(x)<E
(c) U(x)=0
(d) U(x) < or = E

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