4.63 A Pitot-static tube is mounted on an airplane to measure airspeed. At an altitude of 10,000 ft, where the temperature is 23°F and the pressure is 10 psia, a pressure difference corre- sponding to 10 in of water is measured. What is the airspeed?
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- What is the pressure inside the drop of mercury of radius 3.00 mm at room temperature? Surface tension of mercury at that temperature (20°C) is 4.65 x 10 N m. The atmospheric pressure is 1.01 x 10° Pa. Also give the excess pressure inside the drop.Dr. B uses his phone and the app phyphox to measure atmospheric pressure at different heights. At the first floor of the UMass W.E.B. DuBois Library he measures a pressure of 101300 Pa. He then takes the elevator to the roof of the library and measures a pressure of 100172 Pa. If the density of the air is 1.205kg/m33, what is the height of the library? a. 124 m b. 96 m c. 76 m d. 67 m e. 105 mWhen a person inhales, air moves down the bronchus (windpipe) at 13.8 cm/s. The average flow speed of the air doubles through a constriction in the bronchus. Assuming incompressible flow, determine the pressure drop in the constriction. Neglect the change of pressure due to change in height ?y in the wind pipe. If the pressure goes down then the pressure drop is negative. Use 1.20 kg/m33 for the density of air.