Let the variable z be the height above sea level. the barometric equation expresses the variation of dp mgp where m 4.81053 x 10-26 kg is the average mass of an air molecule, g = 9.80665 m-s-2 is the air pressure p with altitude according to the relation standard magnitude of free-fall acceleration, and k ~ 1.38064852 × 10-23 j·k-1 is the boltzmann constant (a) according to the international standard atmosphere (isa) model, the average temperature of the troposphere (that is, the bottommost 11 km of atmosphere) drops from its sea-level value of to-288.15 k at a steady rate of г-6.5 k-km-1 with increasing altitude. use this information (b) the pressure at sea level is po 1.01325 x 105 pa according to the isa model. solve the barometric equation to get the pressure as a function of altitude.