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A 2 kg mass has 40 J of potential energy with respect to the…

A 2 kg mass has 40 J of potential energy with respect to the ground. How high is it above the ground?

Published August 23, 2024
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For a system in mechanical or static  equilibrium,

For a system in mechanical or static  equilibrium,

Published August 23, 2024
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What is the centripetal acceleration of a point on the perim…

What is the centripetal acceleration of a point on the perimeter of a bicycle wheel of diameter 70.0 cm when the bike is moving 8.00 m/s?

Published August 23, 2024
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Determine if the following statements are true or false abou…

Determine if the following statements are true or false about gravitational force:  The gravitational force acting upon an object at rest on a horizontal  surface is the same as the weight of the object.

Published August 23, 2024
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Describe the energy of a car driving up a hill.

Describe the energy of a car driving up a hill.

Published August 23, 2024
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When a hard rubber rod is given a negative charge by rubbing…

When a hard rubber rod is given a negative charge by rubbing it with wool:

Published August 23, 2024
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How much work is required to stop an electron  ( m = 9.11 x…

How much work is required to stop an electron  ( m = 9.11 x 10 – 31 kg) (  which is moving with a speed of 1.90 x 10 6 m/s?  

Published August 23, 2024
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An acorn falls from a tree.  Compare its kinetic energy K, t…

An acorn falls from a tree.  Compare its kinetic energy K, to its potential energy U.

Published August 23, 2024
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An electrical insulator is a material:

An electrical insulator is a material:

Published August 23, 2024
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On a balanced see saw, a boy three times as heavy as his par…

On a balanced see saw, a boy three times as heavy as his partner sits   A)   1/3 the distance from the fulcrum.   B)   less than 1/3 the distance from the fulcrum.   C)   more than 1/3 the distance from the fulcrum.    

Published August 23, 2024
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