Two paramedics are lifting a person on a stretcher. one of the paramedics exerts a force of 350 n at 58o above the horizontal and the other exerts a force of 410 n at 43o above the horizontal. what is the weight of the person and the stretcher?

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.