You are free to look up the physical dimensions of the planet Earth, math formulas, physical constants etc using books, tables, Google etc.
You are precluded to ask (i.e. Google) a direct question:
What is the total weight of Earth's atmosphere?
prior to posting your answer.
Please submit your estimate in a format
N.PQ *10r kg.
Provide your reasoning as well.
We shall jointly evaluate the accuracy later.
I hope I didn't cheat.
gives pressure at one atmosphere of 14.696 pounds/in^2
gives the surface area of the earth as 196.9 million square miles
Converting square miles to square inches and multiplying the two numbers gives
which converts to 5.2689*10^18 kg.
I could probably improve this by subtracting the air that is displaced by land, but I doubt this matters much.
This also assumes a column of air has parallel sides, but they actually meet at the center of the earth. I think this is probably negligible.
Posted by Jer
on 2016-09-27 13:30:12