An electromagnetic wave is traveling in a vacuum. the magnitudes of the electric and magnetic fields of the wave are and the electric and magnetic energies carried by the wave are

In a system, when potential energy decreases, then entropy also decreases. true false

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.

Identify some abiotic characteristics of the tundra biome.