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प्रश्न
What is nuclear energy?
उत्तर
The energy released/required during disintegration of a nucleus is called nuclear energy.
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संबंधित प्रश्न
Give one example to show the conversion of potential energy to kinetic energy when put in use.
What is hydro energy?
Name two examples in which the mechanical energy of a system remains constant.
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
State the energy changes which take place when:
An air gun is loaded and then fired.
State the energy transformation on the following:
Electricity is obtained from wind energy.
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
In which states is water found in nature?
