As potential and kinetic energy increase what happens to mechanical energy?
A. Mechanical energy increases
B. Mechanical energy decreases
C. Mechanical energy stays the same
D. Mechanical energy has no relation to kinetic and potential energy

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

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.

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell