Muskoxen have a number of adaptations that allow them to survive in very irigid winter conditions, chief among them a thick coat that has veryr low thermal conductivity. Their heat loss to the environment is primarily via radiation, convection. and conduction to the ground through their hooves. In one study, which took place at a temperature oi -32 C, thermal cameras found that the surface oi the coat had a temperature of -28C, only slightly warmer than the environment. Other measurements found that the top of the 2.5-cm-thick keratin layer {thermal conductivity 0.63 W/ m - K} that makes up the bottom of the hooves was only 9C warmer than the -32 C ground. Researchers estimated that convective losses were two-thirds of radiation losses. When not foraging, muskoxen minimize heat loss by standing in tight groups. Most of their heat loss to the environment comes when they are foraging. Assume a surface area of 3.7 m2 , an emissivity of 0.98, and a total hoof area in centact with the ground of 100 cm2. Part A Determine the rate of heat loss due to radiation. Express your answer with the appropriate units. ANSWER: R=:] Part B Determine the rate of heat loss due to convection. Express your answer with the appropriate units. ANSWER: Hm = l: Part 0 Determine the rate of heat loss due to conduction. Express your answer to twp significant figures and include the appropriate units. ANSWER: Jpcond = ] Part D In the study, an adult muskox spent 350 minutes foraging, during which she consumed 35,000 12.] of food. What fraction of the energy intake was lost as heat during this time'? ANSWER: Elem/Em = [:1 ]