State the pressure is the same everywhere in the pipe

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Reference no: EM13181405

An open end mercury manometer is connected to a low pressure pio\peline that supplies a gas to a lab. Because paint was spilled on the arm connected to the line during a lab renvation it is impossible to see the level of the manometer fluid in this arm. During a period when the gas supply is connected to the line but there is no gas flow, a Bourdon gauge connected to the line downstream from the manometer gives a reading of 7.5 psig. the level of mercury in the open arm is 900 mm above the lowest part of the manometer.

a. When the gas is not flowing the pressure is the same everywhere in the pipe. How high above the bottom of the manometer would the mercury be in the am connected to the pipe?

b. When gas is flowing, the mercury level in the visible arm drops by 25mm. What is the gas pressure (psig) at this moment?

Reference no: EM13181405

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