Situation 5: A cylindrical tank 5m in diameter is divided by a vertical partition along its diameter. A submerged orifice 30mm in diameter (C=0.60&(v=0.92) is located on the side of the partition. At a certain instant, the water level in one side is 7m higher than the water level on the other side. 23. How long will it take for the water surface to be at the same level? a. 230mins c. 210mins b. 180mins d. 45 mins 24. What is the height difference of the water surface in the tank after 400 seconds? a. 6.6m c. 8.8m b. 7.7m d. 9.9m 25. How long will it take until the height difference become 2/3 of the initial difference? a. 42mins c. 21mins b. 33 mins d. 90mins