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Old 27th June 2008, 17:55   #8 (permalink)
603DX
 
Join Date: Apr 2008
Location: Garden of England
Age: 70
Posts: 53
Jetstream Rider: Not disagreeing with the point made in your post #7, but you have a factor of 10 error in the calculated average pressure.

Try one apple per postage stamp, which illustrates your point even better.
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