Air at 15C flows through a large duct and thence through a 75-mm-diameter hole in the thin metal (c = 0.62). A U-tube gage containing water registers 31.7 mm. Considering the specific weight of air constant, what is the flow through the opening? When the flow of water through a horizontal 300 mm by 150 mm Venturi meter (c = 0.95) is 0.111 m 3 /s, find the deflection of the mercury in the differential gage attached to the meter.
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