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ziddy83

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I need some help solving the following problem. I am kind of confused on where to start. here is the question from the book.

A carnot refrigerator is operated between two heat reservoirs at temperatures of 320K and 270K.

a) If in each cycle the refrigerator receives 415J of heat energy from the reservoir at 270k, how many joules of heat energy does it deliver to the reservoir at 320k?

b)If the fridge goes through 165 cycles each minute, what power input is required to operate the refrigerator?

Thanks in advance for any help.