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Work, Energy and Power
Question
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If two protons are brought near each other, what happens to potential energy of the system?

Answer

Two protons carrying the same charge, repel each other.
Therefore, to bring them near to each other we have to do work against force of repulsion. This work done is converted into potential energy and hence the potential energy increases.

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Some More Questions From Work, Energy and Power Chapter

Define the unit joule.

What are different units of energy?

What is watt?

Define watt.

How many joules are there in one eV?

What is the relation between kWh and Joule?

Does the body at rest possess energy?

By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?

A man is rowing upstream and is at rest w.r.t. shore. Is he doing work w.r.t. shore?