Question

Can a given amount of mechanical energy be converted completely into heat energy? If so, give an example.

Answer 1

Answer:yes, the mechanical energy converts into heat energy abiding the joule theory .

Explanation:

energy =E can be written as W as work and energy are related.

so, W varies as H ,

H means heat produced.

then W=JH

here J is the joule coefficient.

its magnitude is 1 in SI , 4.2 in CGS

Example:When we rub our hand the mechanical energy transforms into heat energy and we feel hot in our hand.

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