Homework Statement
The thermal efficiency of a refrigerator is determined by the coefficient of performance , which is defined as the ratio of the amount of heat removed to the input of mechanical work needed for operation, or K=Q_c/W_in
An air conditioner operates exactly as a...
Homework Statement
What is the net change in entropy of the system from the time of mixing until the moment the ice completely melts? The heat of fusion of ice is .
Note that since the amount of ice is relatively small, the temperature of the water remains nearly constant throughout the...