You put 6 bottles of beer (assuming 330 mL for each) in your fridge which were in a warm car at 30 C, and you want them to cool to 4 C. If the power of your fridge is 500 W (and assume that all can be used to do work), and operates at 20% of the Carnot limit, how long will you have to wait for your beer to cool? Room temperature is 21 C.

If you already answered that question, please do not answer it again