P15_006 - 6. The magnitude F of the force required to pull...

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Unformatted text preview: 6. The magnitude F of the force required to pull the lid off is F = (po − pi )A, where po is the pressure 2 outside the box, pi is the pressure inside, and A is the area of the lid. Recalling that 1 N/m = 1 Pa, we obtain F 480 N = 3.8 × 104 Pa . = 1.0 × 105 Pa − pi = po − A 77 × 10−4 m2 ...
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