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प्रश्न
Give one example of a body that has potential energy, due to its position at a height.
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उत्तर
Water at height has P.E. stored in it. Falling water from a height can be used to do work like turning a wheel.
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संबंधित प्रश्न
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
Give one relevant example for the following transformation of energy:
Electrical energy to heat energy.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is at the ground.
State the energy changes in the following case while in use:
an electric cell in a circuit
State the energy changes in the following case while in use:
a ceiling fan
What kind of energy is possessed in a situation when?
An electron spinning around the nucleus.
State the energy changes which take place when:
A body released from rest from the top of a building.
Give one example when:
Chemical energy changes to light energy.
What is nuclear energy? Explain the principle of producing electricity using nuclear energy is a nuclear reactor.
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)
