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प्रश्न
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उत्तर
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संबंधित प्रश्न
Give one relevant example for the following transformation of energy :
Electrical energy to light energy.
Give one example to show that the sum of potential energy and kinetic energy remains constant if friction is ignored.
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?
State two characteristic which a source of energy must have.
Name the energy changes for the following:
electric ball
Name the energy changes for the following
human body
How is kinetic energy possessed by a moving body measured?
What kind of energy is possessed in a situation when?
A horse running along a level road
What is dissipation of energy?
State the energy changes which take place when:
A car moves up a hill.
