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प्रश्न
Did joule converted mechanical energy to heat energy? Explain.
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उत्तर
Joule essentially converted mechanical energy to internal energy. In his experiment potential energy is converted to the rotational kinetic energy of paddle wheel and this rotational kinetic energy is converted to the internal energy of water.
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संबंधित प्रश्न
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An ideal gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 bar from an initial volume of 2.50 dm3 to a final volume of 4.50 dm3. The change in internal energy (∆U) of the gas will be ______.
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(Given: 1 atm-litre = 101.3 J)
