The area of a small plate is 15 cm x 15 cm. If the pressure exerted on it by the atmosphere is 10 N/ sq cm then calculate the force exerted on it by the column of air above?
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by formula:-p=F/A.....solve by this
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as p=f/a
10=f/15x15
10=f/225
f=225x10
f= 2250 N
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