Air at 20°C flows through the tube as shown in the figure. Assume that air is an ideal fluid. The density of air is 1.20 kg/m3, the density of mercury is 13600 kg/m3. Suppose that d1 = 3 mm and d2 = 1.5 cm.
(a) What is the air speed v1 at point 1?
(b) What is the air speed v2 at point 2?
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A mercury manometer shown in the figure contains air at the cuff pressure P. The difference in mercury heights between the left tube and the right tube is h = 115 mm. What is the gauge pressure? The density of mercury is 13600 kg/m3, and the ambient pressure is P0 = 101000 Pa.
Air flows through the tube shown in the figure. Assume that air is an ideal fluid.
What is the airspeed v1 at point 1?
What is the airspeed v2 at point 2?
What is the volume flow rate?
A venturi tube is a tube with a constriction in it. Pressure ina venturi tube can be measured by attaching a U-shaped fluid-filleddevice to the venturi tube as shown in the figure above.The densityof air is 1.20 kg/m3 and the density of water is 1000kg/m3. Use g = 10 m/s2.
(a) If the fluid in the U is water, and there is a 10.0 cmdifference between the water levels on the two sides, what is themagnitude of the pressure difference between points 1 and 2 in theventuri tube? (Pa)
(b) The venturi tube has air flowing through it. If thecross-sectional area of the venturi tube is 2 times larger at point 1 than it is atpoint 2, what is the air speed at point 2? (m/s)
