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प्रश्न
Work done by a boy depends on the time in which he does work.
विकल्प
True
False
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उत्तर
False.
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संबंधित प्रश्न
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
Explain by an example that a body may possess energy even when it is not in motion.
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
Why is the work done on an object moving with uniform circular motion zero?
Define 'joule'.
An electric motor drives a machine which lifts a mass of 4 kg through a height of 10 m in 5 s at a constant speed. Assuming g = 10 ms-2, calculate
(i) the amount of work done, (ii) the power of the machine.
Give an example
Electrical energy changes of sound energy.
