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A mercury barometer reads 745 mm on the roof of a building and 763 mm on...

A mercury barometer reads 745 mm on the roof of a building and 763 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building

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soln pressure difference is due to height difference. as p=fgh. P = (p gh) = 745 mmob ng 745 X 133.322 paca 1 mm of hg = 133.

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