5. A human being has an average venous blood pressure of 12 mm Hg (Hg = mercury). The density of Hg (mercury) is 13,530 kg/m3. How high does a saline bag have to be raised to just barely enable the flow (that is, the pressure of the saline at the needle is equal to that of the blood in the vein) of saline through a line and needle inserted into a person's vein? The density of saline is 1020 kg/m3.

In a tank with a height of 1 meter, open to the atmosphere at the top, there are two immiscible liquids (which do not mix) and whose densities are 13,600 kg/m3 and 750 kg/m3, respectively. The tank is completely full and each liquid occupies half of the container. If the atmospheric pressure of the place is 105 Pa, at what depth, measured from the top of the tank, is the value of the gauge pressure equal to half the value of the atmospheric pressure of the place? Consider that the gravitational acceleration of the place is 9.8 m/s2? a) 84.76 cmb) 34.75 cmc) 50.00 cmd) 37.51 cm

A mercury manometer is used to measure the pressure difference between pipes A and B. Oil (specific weight = 8.33 kN/m³) is flowing in pipe A and mineral oil (specific weight = 8.96 kN/m³) is flowing in pipe B. An air pocket is entrapped in the mineral oil as shown. Determine the pressure in pipe B if the pressure in pipe A is 105.5 kPa.

SG of Water=1.0 SG of Mercury=13.6 SG of n-Octane=0.65