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संबंधित प्रश्न
Give reasons for the following. No work is done if a man is pushing against a wall.
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
How many watts equal one horse power?
A uniform circular motion is an accelerated motion. Justify it.
What is the ratio of SI units to CGS units of 'work'?
Complete the following sentences:
The SI unit of work is ....... and of power is .......
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
Fill in the boxe to show the corresponding energy transformation.
Give an example
Electrical energy changes to heat energy.
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
Define Translational motion.
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
What should be the characteristic of a source of energy?
Work done by this force at any instant is ______.
