The outside wall of a shed is a wooden slab that is 65 mm thick, 2.5 meters tall, and 2 meters wide. The temperature of the inner surface is kept at 20C and the temperature of the outer surface is kept at 7C. The thermal conductivity of the wood is k = 0.10 What is the rate W mk of heat transfer through the wall? If the wall is thicker, does the rate of heat transfer increase or decrease? Explain. If the thermal conductivity is larger, does the rate of heat transfer increase of decrease? Explain.