Answer to Question #172555 in Physics for Diocos

Question

He stand with one foot on ceramic flooring and one foot on a wool carpet, making contact over an area of 75.0cm² with each foot. Both the ceramic and the carpet are 5.00 cm thick and are 12.0ºC on their bottom sides. At what rate must heat transfer occurs from each foot to keep the top of the ceramic and carpet at 38.0ºC?

Answer 1

$$P=\frac{kA(T_h-T_c)}{d}\\ P_w=\frac{(0.035)(75\cdot10^{-4})(38-12)}{0.05}=0.1365 W\\ P_c=\frac{(5.077)(75\cdot10^{-4})(38-12)}{0.05}=19.8\ W$$