The pressure difference between two air tanks A and B is measured by a U-tube manometer, with mercury as the manometer liquid. The barometric pressure is 700 mm Hg. a. What is the absolute pressure in the tank A? b. What is the gauge pressure in the tank A? Solution A air Pa Zo h₁ = 2 cm B air vacuum Pb Hg h2 = 86 cm Z₁

Suppose that exactly half of the annular volume between concentric, horizontal cylinders is filled with a liquid and half with a gas, as shown below on the left. When the inner cylinder is rotated at an angular velocity , it is found that one interface rises to a height H above the other. The gap between the cylinders is sufficiently thin (W<< R) that local Cartesian coordinates can be used, as shown on the right. (For clarity, the gap width is exaggerated on the left.) All of the following questions concern flow in the liquid, which is Newtonian with constant properties. g R+W Gas Ω Liquid R H y Enlargement of liquid-filled gap X W ΩR Fixed (a) Assuming steady, fully developed flow, determine Vx(y) in the liquid in terms of dp/dx. (At this point, dp/dx is unknown.) (b) Relate dIP/dx in the liquid to H. You can assume that the absolute pressure in the gas is nearly constant (P = Po) and that surface tension is negligible. (c) Calculate H. That is, relate H to the rotation rate (),…

Consider an inverted manometer with oil of specific gravity 0.91, which is displayed in the image linked here. What is the difference in pressures between x and y in psi (pounds per square inch)?

question in image