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प्रश्न
Give two examples each of renewable and non-renewable sources of energy?
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उत्तर
Renewable sources of energy: Solar energy and wind energy.
Non-renewable sources of energy: coal and oil.
संबंधित प्रश्न
State the energy change in the following device while in use:
A loudspeaker
State two factors on which the kinetic energy of a moving body depends.
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
Name the form of mechanical energy, which is put to use.
Name the energy changes for the following:
bicycle brakes
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
State the energy changes which take place when:
A magnesium ribbon burns in air.
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
What ts the original source of energy for the electricity produced at a thermal power station?
