Trad_HW_2_Solutions - SPRING 2014 CE 341 INTRODUCTION TO...

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SPRING 2014 – CE 341 – INTRODUCTION TO FLUIDS TRADITIONAL HOMEWORK #2 – DUE FEBRUARY 24, 2014 1. Problem one has two parts (10 pts): a) A tank is filled with seawater to a depth of 12 ft. If the specific gravity of seawater is 1.03 and the atmospheric pressure at this location is 14.8 psi, then please find the absolute pressure (psi) at the bottom of the tank. b) An open tank contains brine to a depth of 2 m and a 3-m layer of oil on top of the brine. Density of brine is 1,030 kg/m 3 and the density of oil is 880 kg/m 3 . Find the gage pressure (kPa) at the bottom of the tank. A) B)
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2. The figure shows the cross section of a dam. Assume the specific weight of water as 62.4 lb/cu ft. Considering unit width of the dam, find the maximum possible moment associated with the hydraulic force on the dam about point P (ft-lb). (10 pts)
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3. The inclined surface shown, hinged along edge A, is 5m wide. Determine the resultant force F R , of the water and on the inclined surface. (10 pts) ONLY F R IS NEEDED.
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4. The door shown in the side of the tank is hinged along its bottom edge. A pressure
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