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2. A 300 mm diameter pipe caries water (=1000 kg/m3).An orifice plate with diameter of 150 mm is installed to measure the flow rate. The differential pressure measure using an inverted U-tube manometer containing mercury (0=13600 kg/m3).he observed difference in mercury levels is 65 mm of mercury.Assume Cd=0.65, Calculate . the differential head 0 82 he . Determine the volumetric flow rate in L/s. 47. 0 0475 x2 . Calculate the mass flow rate of water in kg/s. 47.53