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प्रश्न
What is nuclear energy?
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उत्तर
The energy released/required during disintegration of a nucleus is called nuclear energy.
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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 example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
Select the renewable and non-renewable sources of energy from the following:
Diesel
Give one disadvantage of using a solar cell.
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
Give three examples of bodies possessing kinetic energy.
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
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.
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)
