How does air pressure decrease as altitude increases?

1 Answer
MattyMatty
Dec 15, 2017

#P = P_0 * e^(-h/8005)#
#"(Pressure P in Pascal and height h in meter)"#

Explanation:

#P_0 "= air pressure at ground level, around 101,300 Pascal"#
#"8005 meter = relaxation height"#
#"So at an altitude of 8005 meter, air pressure is a factor e smaller."#
#"e = Euler's number = 2.71828..."#
#"So at the top of the mount Everest (8850 meter high) we have :"#
#P = P_0 * e^(-8850/8005) = 0.331 * P_0#
#"So the air pressure is only one third that at ground level there !"#

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