The water in a tank is pressurized by air, and the pressure is measured by a multifluid manometer as shown in figure. The tank is located on a mountain at an altitude of 1400 m where the atmospheric pressure is 85.6 kPa. Determine the air pressure (atmospheric) in the tank if h1=0.1 m, h2=0.2 m, and h3= 0.35 m. Take the densities of water, oil, and mercury to be 1000 kg/m3 , 850 kg/m3 , and 13,600 kg/m3 , respectively
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