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प्रश्न
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in respiration.
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उत्तर
Chemical energy changes into heat energy.
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संबंधित प्रश्न
State the energy changes in the following case while in use:
A ceiling fan
State the energy changes that occur in a watch spring while it unwinds.
State the energy changes in the following while in use An electric oven.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in a car going uphill.
State the energy changes in the following case while in use:
loudspeaker
Choose the odd one:
Avinash can run with a speed of 8 m s–1 against the frictional force of 10 N, and Kapil can move with a speed of 3 m s–1 against the frictional force of 25 N. Who is more powerful and why?
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Can any object have momentum even if its mechanical energy is zero? Explain
A light and a heavy object have the same momentum. Find out the ratio of their kinetic energies. Which one has larger kinetic energy?
