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प्रश्न
What kind of energy is possessed in a situation when?
A stone, in a stretched catapult.
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उत्तर
Potential Energy.
संबंधित प्रश्न
Give one example to show the conversion of potential energy to kinetic energy when put in use.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
Select the renewable and non-renewable sources of energy from the following:
Wind
State the energy transformation on the following:
Electricity is obtained from hydro energy.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
State the energy changes which take place when:
In a heat engine.
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)
What is meant by energy?
