Suppose that a horse is standing in partial shade. Solar radiation provides a net intake of energy of 42 milliwatts per minute, and infrared radiation provides an additional net input of 56 milliwatts per minute. Conductive and convective outputs of heat are a combined 308 milliwatts per minute. There is no detectable change in heat from evaporation. Assuming that the horse is maintaining a constant temperature, how much heat must it be generating (in milliwatts per minute)?
A) 98
B) 210
C) 266
D) 308

Question

Quizplus · Accepted Answer

The horse must generate 210 milliwatts per minute to balance the energy inputs and outputs, maintaining a constant temperature. Total input (42 + 56) is 98 milliwatts, and total output is 308 milliwatts. The difference (308 - 98) is 210 milliwatts, which must be generated by the horse.

Suppose That a Horse Is Standing in Partial Shade