Answer Happy

1. An oil has a specific gravity of 0.8. Find it's specific weight w and density p? 2. An open tank contains 4 m of water covered with 0.5 m of oil (Y = 0.8) Find the pressure at point 1 and 2? 3. The pressure at point 1 and 2 are: P. = 90 kPa P2 = 130 kPa Calculate the specific weight w. Density p. and specific gravity y of the fluid in the tank and the depth of point one? 4. If the atmospheric pressure is 920 mbar and a gauge attached to a tank reads 400 mm/Hg what is the absolute pressure in the tank in kpa? 5. The pressure head at a point is 76 mm of mercury (Hg) with YHg = 13.55. Express this pressure in head of water? 6. Express the pressure 76 mm/Hg (mercury) in pascal? (YHg = 13.55) 7. A rectangle plate 1.5 m X 1.8 m is submerged in water with the 1.5 m side being horizontal. Determine the magnitude of the resultant force and its point of action if the top edge of the plate is: a) at the water surface b) 25 m below the water surface 8. A triangle bulk head is 7m wide at the top and has a vertical depth of 8m. Calculate the force on the bulk head and the position of the center of the pressure if the bulk head is flooded with sea water on one side up to: a) Its top edge b) Up to 4m from the bottom 9. A ballast tank is 15 m long, 12 m wide and 1.4 m deep is filled with fresh water. Calculate the load on the top of the tank on the short side if there is a head of 7m of water above the tank top. Also calculate the center of pressure on the short side.