The rate of heat transfer to the surroundings from a person at rest is about 400 kj/h. suppose that the ventilation system fails in an auditorium containing 100 people. assume the energy goes into the air of volume 1500 m3 initially at 300 k and 101 kpa. find the rate (degrees per minute) of the air temperature change.

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.