Question: An orifice is being used to measure the flow of water through a line. A mercury-water manometer is connected across the orifice as shown below, the lines being filled with water up to the mercury-water interface. If the manometer reading is 5 in., what is the pressure difference between the two locations in the pipe? Suppose the pipe had been vertical with water flowing upward, and the distance between the two manometer taps was 2 ft. What would the pressure difference between in. the two taps have been when the manometer reading was 5
In the vertical case, what would the pressure difference have been if ethyl acetate were substituted for the water?