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प्रश्न
State the S.I. unit of energy.
उत्तर
S.I. unit of energy Joule (J).
संबंधित प्रश्न
Work done by a boy depends on the time in which he does work.
Work done = Force × ........................................
The moon is revolving around the earth in a circular path. How much work is done by the moon?
A force of 30 N acts on a body and moves it through a distance of 5 m in the direction of force. Calculate the work done by the force.
A man lifts a mass of 20 kg to a height of 2.5 m. Assuming that the force of gravity on 1 kg mass is 10 N, find the work done by the man.
Explain degradation of energy by taking two examples of your daily life.
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
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(a) by the force applied by the boy?
(b) by the gravitational force of earth?
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When you move upstairs, do you perform some work?
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Write an expression for work done by a force depends?
No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
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Name the type of energy possessed by a
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(iii) wound up clock
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Fill in the boxe to show the corresponding energy transformation.
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Can two agents, doing the same work, have different power?
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A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
