Question

b. A freezer you got from a student sale has an inside temperature of – 10C; the temperature in your dorm room is around 20C; assume the freezer is a Carnot engine; furthermore, the insulation is not perfect, and allows for heat to enter the freezer at a rate of 0.1 W. How much power is needed (in the freezer motor) to maintain the constant inside temperature? You are putting 1 liter room-temperature water in ice-cube trays into the freezer How long for the ice cubes to be ready?

Answer 1