Question: A refrigerator operates using a 186.5 W motor. If the temperature in the inside of the fridge is -20C and the one outside is 35C,

A refrigerator operates using a 186.5 W motor. If the temperature in the inside of the fridge is -20C and the one outside is 35C, what is the maximum thermal waste (in watts) that can be tolerated through the walls of the device if we assumes the motor is running continuously? Assume also that efficiency is equal to 75% of a reversible machine. The answer is 643.2w

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