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प्रश्न
State the energy changes which take place when:
Burning of coal.
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उत्तर
The chemical energy changes into heat energy.
संबंधित प्रश्न
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
Give one example of a body that has potential energy, due to its position at a height.
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.)
Name six different forms of energy?
State two characteristic which a source of energy must have.
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
State four ways for the judicious use of energy.
What do you understand by the kinetic energy of the body?
State the energy changes which take place when:
A body released from rest from the top of a building.
Give one example when:
Electric energy changes to potential energy.
