From the ideal gas law equation we know that,

From Problem 2.13 we know that,

From (1) and (2) we have,

In (4), h-h0 represents height above sea level and P0 the atmospheric pressure at sea level and T I am guessing is assumed to be 273K.

So at a height of 5 Km above sea level we have,

Similarly at a height of 5 Km below sea level we have,

## Monday, January 25, 2010

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though 5 km is less shouln't we consider the change in gravity and right g as a function of h and then integrate from the basic.

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