The surface area of an adult human is about 1.80 m2. The emissivity of human skin is 0.970. Body hair creates a 5.00 mm thick layer of "dead air" next to the skin that acts as insulation. Suppose that a bare human with a skin temperature of 98.6°F is standing in a room where the air is 78.0°F but the walls are 100.0°F. The thermal conductivity of air is What is the total rate of heat loss for this human? (3 sig. figs.)
