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प्रश्न
State the energy changes which take place when:
A body released from rest from the top of a building.
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उत्तर
The potential energy changes to kinetic energy.
संबंधित प्रश्न
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
State the changes in form of energy while producing hydro electricity.
State different forms of potential energy and give one example of each.
What is solar energy?
State two advantages of producing electricity from solar energy.
State the energy changes which take place when:
Food is digested by animals.
State the energy changes which take place when:
During electrolysis.
State the energy transformation on the following:
Electricity is obtained from wind energy.
Give one example when:
Electric energy changes to mechanical 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.
