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प्रश्न
State the energy changes which take place when:
Food is digested by animals.
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उत्तर
The chemical energy changes into heat energy.
संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
Name the type of energy (kinetic or potential) possessed by the following:
A moving cricket ball.
Name the type of energy (kinetic or potential) possessed by the following:
A bullet fired from a gun.
Name the energy changes for the following:
pendulum
Write the type of energy possessed in the following case:
A moving cricket ball.
State two advantages and two disadvantages of using hydro-energy for producing electricity.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
Use your brain power!
How do we save fuel by using public transport?
