9. A bubbler system requires a pressure of 47kPa to produce bubbles at a depth of 200in, What is the density of the liquid in pounds per cubic foot? 10. A capacitive sensing probe 2.7m high has a capacitance of 157pF in air and 7.4nF when partially immersed in a liquid with a dielectric constant of 79. How much of the probe is immersed in the liquid? 11. A force sensor is immersed in a liquid with a density of 61lb/ft3 to a depth of 42 in and then placed in a second liquid with a density of 732N/m3. What is the change in force on the sensor if the diameter of the sensor is 8cm and the change in depth is 5.9cm ? 12, 6,19 An ultrasonic transmitter and receiver are placed 10,5 ft above the surface of a liquid, How long will the sound waves take to travel from the transmitter to the receiver? Assume the velocity of sound waves is 340m/s 1. Consider a vertical U-tube manometer as shown below, consisting of a glass tub with an inner diameter of 0,3mm. Fluid 1 is air, fluid 2 is mercury and fluid 3 is water, all at 20C, Point A is opened to the standard atmosphere, whereas point B is at an elevation ZB=988mm, if Zc=743mm and Z0=345mm, determine the absolute water pressure at point B, compute all capillary actions and apply them to your results. 2. If the air pressure at sea level is 101,325kPa and the density of air is 1,2kg/m ? a. Calculate the thickness of the atmosphere (m) above the earth. b. What gauge pressure is experienced by a driver at a depth of 10m seawater of relative density of 1,025 ? Assume g=9.81m/s2 3. Two pistons connected by a pipe are filled with oil. The larger piston has 3.2ft diamet. and has a force of 763lb applied to it, What is the diameter of the smaller piston if it support a force of 27lb ? 4. Oil (SG=0,93) is pumped from a well, If the pump is 11,7ft above the surface of the 0 what pressure must the pump be able to generate to lift the oil up to the pump? 5. In the calibration of gauges in a factory, the quality assurance department usi a dead-weight tester as shown below, Weights loaded onto the piston carri generate a known pressure in the piston cylinder which in turn generates reading on the gauge. If a pressure of 35MPa is generated by the tester whe loaded with a 100kg weight, determine; i. The diameter of the piston cylinder (mm). ii. The load (kg) needed to produce a pressure of 150MPa. [Note, the cross-sectional area of the piston is circular] 6. A U-tube manometer uses glycerine as the measuring fluid, What will be the different: pressure if the distance between the levels of glycerine is 103 in? 7. The cabin pressure in a spacecraft is maintained at 14.3 psia, What will be the force or window 2,9ft wide and 1,7ft high when the craft is in outer space? 8. A displacer is used to measure changes in liquid level. The liquid has a density of 33lb/fl What is the diameter of the dispenser if a change in liquid level of 45 in produces a change in force on the sensor of 3.2lb ? 9. A bubbler system requires a pressure of 47kPa to produce bubbles at a depth of 200in. What is the density of the liquid in pounds per cubic foot