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State the energy change in the following device while in use:
A glowing electric bulb.
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
What is wind energy?
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
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What is the main energy transformation that occur in:
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State the energy changes which take place when:
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Give one example when:
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What ts the original source of energy for the electricity produced at a thermal power station?
