A 900 kg car accelerates 2 m/s2 to the right. what is the net force acting on the car?

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.

How many atoms of nitrogen are in the chemical formula ni(w on

An atom that has gained or lost electrons is called an _