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प्रश्न
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
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उत्तर
The kinetic energy changes to potential energy when stone rises up. The potential energy then changes back to kinetic energy, when stone comes down.
संबंधित प्रश्न
Name the type of energy (kinetic or potential) possessed by the following:
A stretched rubber band.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is just in the middle .
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
State the work energy theorem.
What is ocean? Explain in brief.
State the energy changes which take place when:
Electricity obtained from nuclear energy.
Give one example when:
Mechanical energy changes to electric energy.
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.
In which states is water found in nature?
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A compressed spring
