(a) what is the rate of heat conduction through the 3.00-cm-thick fur of a large animal having a 1.40-m2 surface area? assume that the animal’s skin temperature is 32.0°c , that the air temperature is −5.00°c , and that fur has the same thermal conductivity as air. (b) what food intake will the animal need in one day to replace this heat transfer?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.