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Can 10J of mechanical energy be converte...

Can 10J of mechanical energy be converted to 10J of heat? Justify.

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Knowledge Check

  • In a motor the electrical power input is 500 W and the mechanical power output is 0.54 horse power. Heat developed in the motor in 1 h is (assuming that all the electric energy which is not converted to mechanical energy is converted to heat) is

    A
    `4.18xx10^4cal`
    B
    `3.6xx10^5cal`
    C
    `8.6xx10^4cal`
    D
    `1.28xx10^5cal`

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