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प्रश्न
State the S.I. unit of energy.
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उत्तर
S.I. unit of energy Joule (J).
संबंधित प्रश्न
Name a common device where a gear train is used
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Explain by an example that a body may possess energy even when it is not in motion.
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
In which of the following case the work done by a force will be maximum : when the angle between the direction of force and direction of motion is 0° or 90°?
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.
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A girl weighing 400 N climbs a vertical ladder. If the value of g be 10 m s−2, the work by her after climbing 2 m will be :
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Is power a scalar quantity?
Can every force produce work?
Distinguish between work and power.
Give an example
Light energy changes to electrical energy.
What is the difference between renewable and non-renewable resources?
A ______ should act on an object.
