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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
Express joule in terms of erg.
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A body does 20 J of work in 10 s. What is its power?
Name the physical quantity associated with the 'rate of doing work'.
What do you understand by 'potential energy' and 'Kinetic energy'? Give three examples of each to illustrate your answer.
Can two agents, doing the same work, have different power?
What is the difference between renewable and non-renewable resources?
A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
