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July 23, 2014

Homework Help: Physics

Posted by Anonymous on Thursday, January 26, 2012 at 10:41am.

A cubic box of volume 4.2 multiplied by 10-2 m3 is filled with air at atmospheric pressure at 20C. The box is closed and heated to 195C. What is the net force on each side of the box?

My attempted solution:
.042^(1/3) = .3476 m for the area
.042^(2/3) = .1208 m for the area of a side
(273 + 195)/(273+20) = 1.597
1.597 * .1208 = .19292
.19292 was my answer.
Did I not take this far enough or is the entire set-up wrong?

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