A source at a temperature of 500 K provides 1000 kJ of heat. The temperature of environment is 27 C. The maximum useful work (in kJ) that can be obtained from the heat source is________.

A source at a temperature of 500 K provides 1000 kJ of heat. The tempe

1.	A source at a temperature of 500 K provides 1000 kJ of heat. The temperature of environment is 27 C. The maximum useful work (in kJ) that can be obtained from the heat source is________.
A.	600
B.	500
C.	400
D.	450
Answer» D. 450

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A source at a temperature of 500 K provides 1000 kJ of heat. The temperature of environment is 27 C. The maximum useful work (in kJ) that can be obtained from the heat source is________.

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