Air has a density of about 1.2 kg/m3. One standard atmosphere (1 atm) is about 105 Pa. Assuming that the density of air remained constant as altitude increased, how high would the Earth's atmosphere have be to create a pressure of 1 atm? Figure out how tall a column of air with a base of 1 m2 would have to be. Don't forget to include the acceleration of gravity (10 m/s2) to convert mass to force.