The cooling compartment of a refrigerator and its contents are at 5^◦C and have an average heat capacity of 84 kJ/K. The refrigerator exhausts heat to the room, which is at 25^◦C. What minimum power will be required by the motor that runs the refrigerator if the temperature of the cooling compartment and its contents is to be reduced by 1 C^◦ in 1 min?