If atmospheric pressure was 1bar at sea-level, how far directly upwards would I need to go until the pressure is zero?
2007-01-25 04:42:00 · 7 answers · asked by fistenpumpen 1 in Science & Mathematics ➔ Physics
Atmospheric pressure falls off exponentially with height (ignoring local weather effects) and thus will never be 'zero' but becomes vanishingly small.
You need to ask 'when will the pressure fall below x?'
2007-01-25 05:41:29 · answer #1 · answered by Dr Ditto 2 · 2⤊ 0⤋
As the atmosphere is the thing that causes the preasure, you need to be somewhere where it isn't. So keep going up till there ain't no more.
As already pointed out by Eugene N, it's not a linear relationship due to factors like each layer occupying a much larger area than the one below it due to the volume of the sphere being larger the further away you are from sea level and lessening effects of gravity.
Anyway, at just over 350 miles, you would be pretty much free of the atmosphere.
2007-01-25 05:54:02 · answer #2 · answered by Lemur 1 · 0⤊ 0⤋
The `Troposphere` is about 5 miles thick at `Poles`, whereas it 10 miles thick at the `Equatorial regions`. Then on the `Stratosphere` were we oxygen masks used.
2007-01-25 06:22:12 · answer #3 · answered by CLIVE C 3 · 0⤊ 0⤋
100 kms
2007-01-26 02:54:28 · answer #4 · answered by dream theatre 7 · 0⤊ 0⤋
It's not a linear relationship. Seventy five miles seems to be a resonable boundary
http://en.wikipedia.org/wiki/Earth's_atmosphere
2007-01-25 04:48:45 · answer #5 · answered by Gene 7 · 1⤊ 0⤋
Not sure but i would think after about 5 bars i would be pretty high. Pressure would depend on if i had to add x.
2007-01-25 04:51:41 · answer #6 · answered by Wattsup! 3 · 0⤊ 3⤋
about 100km
2007-01-25 04:46:26 · answer #7 · answered by Anonymous · 0⤊ 0⤋