A person can generate about 300 W of power on a treadmill. If the treadmill is inclined at 2% and a70-kg man runs at 3 m/s for 45 min, consider the following.
(a) Calculate the percentage of the power output that goes into heating up his body.
Calculate the percentage that keeps him moving on the treadmill.
(b) How much water would that heat evaporate? Assume the water starts at body temperature, 37 oC.