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13 October, 17:33

g Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N·m. Determine the final energy of the system if its initial energy is 12.5 kJ.

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  1. 13 October, 17:47
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    38kJ

    Explanation:

    Final Energy = Total Energy at the beginning + Total energy added - energy lost

    Final Energy = 12.5 + 500/1000 + 30 - 5

    = 38kJ
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Home » Engineering » g Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N·m.
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