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Suppose you have an ideal refrigerator that cools an environment at -20.0^oC and has heat transfer to another environment at 50.0^oC . What is its coefficient of performance?

On a hot summer day, 4.00 x 10⁶ J of heat transfer into a parked car takes place, increasing its temperature from 35.0^o1 C to 45.0^o C. What is the increase in entropy of the car due to this heat transfer alone?

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