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प्रश्न
A body does 20 J of work in 10 s. What is its power?
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उत्तर
POWER = `"work done"/"time taken" = 20/10` = 2 watt
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संबंधित प्रश्न
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.
Differentiate between energy and power.
Explain degradation of energy by taking two examples of your daily life.
Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula.
A uniform circular motion is an accelerated motion. Justify it.
Does the earth move around the sun with a uniform velocity?
Distinguish between work and power.
Name the physical quantity whose MKS units are kgm2s-3.
Can two agents, doing the same work, have different power?
