1-65 The maximum blood pressure in the upper arm of a healthy person is about 120 mm Hg. If a vertical tube open to the atmosphere is connected to the vein in the arm of the per- son, determine how high the blood will rise in the tube. Take the density of the blood to be 1050 kg/m³.

Determine the height h of the column of mercury in the tube if the level of water in the tube is 0.2 m and the dimensions of the oil and the water listed in the diagram. Let poil = 900 kg/m³, pwater = 1000 kg/m³, PMercury = 13,500 kg/m³. A 0.4 m Oil B 0.3 m h Water Mercury 0.2 m

2-30 The water in a tank is pressurized by air and the pressure is measured by a multifluid manometer as shown in Fig.P2-30. Determine the gage pressure of air in the tank if h₁-0.2 m, h₂-0.3m, and h₂ =0.4m. Take the densities of water, oil and mercury to be 1000 kg/m³, 850 kg/m³ and 13600 kg/m³, respectively. Oil Air Water FIGURE P2-30 Mercury

Consider the system shown in Fig. P1-77. If a change of 0.7 kPa in the pressure of air causes the brine-mercury interface in the right column to drop by 5 mm in the brine level in the right column while the pressure in the brine pipe remains constant, determine the ratio of A, /A,. Air Area, A₁ Water Mercury SG 13.56 Brinc pipe SG= 1.1/ Area, A₂