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प्रश्न
Give one example when:
Heat energy changes to kinetic energy.
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उत्तर
In the automobile engine, heat energy changes to kinetic energy.
संबंधित प्रश्न
Give one example of a body that has potential energy, in due to its state.
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
State two disadvantages of using wind energy for generating electricity.
What kind of energy is possessed in a situation when?
Water stored in dams.
State the energy changes which take place when:
Food is digested by animals.
Give one example when:
Electric energy changes to potential energy.
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
A body of mass 50 kg has a momentum of 3000 kg−1 ms. Calculate:
(j) the kinetic energy of the body.
(ii) the velocity of the body.
What is the difference between the solid, liquid, and gaseous states of a substance?
