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प्रश्न
State the S.I. and C.G.S. units of energy. How are they related?
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उत्तर
The S.I. unit of energy is the joule (J) and the C.G.S. unit is erg.
1J = 107 erg.
संबंधित प्रश्न
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall
1) Name the force exerted by the table top
2) What is the direction of the force?
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State two factors on which power spent by a source depends. Explain your answer with examples.
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What do you mean by a centrifugal force?
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
What is the work done by the gravitational force on the moon that revolves around the earth?
What do you understand by work? Is work a scalar or a vector quantity?
What is the S.I. unit of work? Define it.
A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg-1).
