Ameter stick balances at the 50.0-cm mark. if a mass of 50.0 g is placed at the 90.0-cm mark, the stick balances at the 61.3-cm mark. what is the mass of the meter stick?

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot