a Dr. Flowers went diving at the Silfra fissure in Iceland. Because the water temperature was 5 C, he was required to wear a drysuit. The drysuit consists of a waterproof shell with a thickness of 1 mm and a thermal conductivity of 0.2 W/m-K and a small (0.5 mm) air gap between thermal undergarments consisting of a goose down jump suit (thickness 4 mm, k = .023 W/m-K) and a base layer of 1 mm thick neoprene (k = 0.19 W/m-K). This kept his body warm, but did nothing for the face. If Dr. Flowers' internal body temp is 308 K and we assume a 3 mm thick level of skin/fat with a thermal conductivity of 0.3 W/mK, and that the water had a convection coefficient of 200 W/m2.K, what was the temperature difference between Dr. Flower's face and chest during the dive? a