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प्रश्न
State the energy changes which take place when A toy car with a wound spring moves on ground.
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उत्तर
P.E (Wound spring) to K.E. (motion)
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संबंधित प्रश्न
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
Derive a relationship between S.I. and C.C.S. unit of work
The moon is revolving around the earth in a circular path. How much work is done by the moon?
Define 1 joule of work.
A 100 W electric lamp emits energy in the form of light at the rate 10 J per second. What percentage of electric energy does the lamp transform into light energy?
Fill in the boxe to show the corresponding energy transformation.
Give an example
Electrical energy changes to heat energy.
How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s-1 to catch the bus?
