A mercury manometer (density = 13,600 kg/m3 ) is connected to an air duct to measure the pressure inside. The difference in the manometer levels is 10 mm, and the atmospheric pressure is 100 kPa. Determine the absolute pressure in the duct.

4. A differential manometer is connected at the two points A and B of two pipes as shown in the figure. The pipe A contains a liquid of S.G. = 1.5 while pipe B contains a liquid of S.G. = 0.9. The pressures at A and B are 98.1 kPa and 176.58 kPa, respectively. Find the difference (h) in mercury level in the differential manometer. Use S.G. = 13.6 for mercury. S.G. = 1.5 IX 13m nnnnnn 2.0 m S.G.= 0.9

The mercury manometer indicates a differential reading of 0.30 m when the pressure in pipe A is 30-mm Hg vacuum. Determine the pressure (kPa) in pipe B.

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