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प्रश्न
State the law of conservation of energy.
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उत्तर
According to the law of conservation of energy, energy can neither be created nor can it be destroyed. It only changes from one form to another.
संबंधित प्रश्न
State two advantage of producing hydroelectricity.
A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2).
What happens to the work done when the dispacement of body is at right angles to the direction of force acting on it? Explain your answer.
Explain the difference between a uniform linear motion and a uniform circular motion.
Give an example
Electrical energy changes of sound energy.
Give an example
Electrical energy changes to heat energy.
What should be the characteristic of a source of energy?
A bucketful of water is to be drawn from a well ______ will be done when a ______ is applied to do this because there will be a ______ of water.
(displacement, work, force)
