Ahalf-gallon container of milk at 65°f is placed in a refrigerator. the milk cools to 40°f after 25 minutes have elapsed. if energy is removed from the milk by heat transfer at a constant rate, determine the rate of heat transfer, in btu/s, during the cooling process. the specific heat and density of the milk are 0.94 btu/lb . °r and 64 lb/ft^3, respectively. kinetic and potential energy effects can be neglected.