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प्रश्न
State the energy changes in the following case while in use:
Burning coal
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उत्तर
Chemical energy to heat energy.
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संबंधित प्रश्न
State the energy changes that occur in a watch spring while it unwinds.
State the energy changes that occur in the following :
An electric generator (or dynamo).
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Explain conservation of energy.
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(b) How much work do they do in just holding it?
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