A transformer has 100 turns on the primary side and 350 turns on the secondary side. If the input voltage is 20V, what is the output voltage?

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.

If a simple machine reduces the strength of a force, what must be increased?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?