# math

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The average air pressure at sea-level will support the column of mercury in a mercury barometer to a height of 760 mm (29.92 in.). If water were used in place of mercury in the barometer, what would be the height of the water column at average sea-level pressure? The density of mercury is 13.596 g per cm3 whereas the density of water is 1 g per cm3. (Hint: At a fixed pressure, the height of the fluid in the tube is inversely proportional to the density of the fluid. Hence, X/760 mm=13.596 g cm-3/1 g cm-3.) Answer: _____ m (Round to 2 decimal places, do not include units.)

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