How much does the atmosphere weigh over each square meter of surface?

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How much does the atmosphere weigh over each square meter of surface?  Express this in tonnes (units of 1000 kg).  Recall the conversion factors:  104 cm2 = 1m2, 1 tonne = 1000 kg = 106 g. 

 

May 4th, 2015

Atmospheric pressure is 1.03 kg / square centimeter, therefore

(1.03kg / cm^2)(10^4 cm^2  / m^2)(1 tonne / 1000kg) =  10.3 tonne per square meter

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May 4th, 2015

Sorry..I forgot to add the rest of the question. 

At sea level, the weight of 1 cm2 of air is approximately 1 kilogram. This value, 1kg/ cmis also known as the atmospheric pressure.  For this analysis, we will assume a featureless Earth without continents.  This will simplify but not significantly alters your calculations.

How much does the atmosphere weigh over each square meter of surface?  Express this in tonnes (units of 1000 kg).  Recall the conversion factors:  104 cm2 = 1m2, 1 tonne = 1000 kg = 106 g.


May 4th, 2015

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