1. The problem statement, all variables and given/known data Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3. What would be the height of the atmosphere if the air density decreased linearly to zero with height? 2. Relevant equations P = ρgh 3. The attempt at a solution Really not sure how to approach this. I've made density a function of height: ρ(h) = 1.3-1.3/h and I integrated this from 0 to h(max) so it now becomes 1.3 - 1.3ln(h), but where do I go from here?