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Question 1 Two reservoirs containing water are connected by a rough iron pipe as shown in the figure below. Screwed Globe Valve (fully open) 10 m 20 m 20 m Screwed Elbows The K-values of the various fittings in the system are as follows: Kvalve Kelbow Ewrought iron Kentrance Kexit 5.5 0.65 0.046 0.5 1.0 3.1 3.2 Find the difference in elevation H of the two reservoirs. Take into account all minor and major losses. (20) Find the time needed for the two tanks to have the same level of water if the cross-section of the left (higher) and right (lower) tanks are 2 m' and 2.5 m² respectively and the level of the lower tank is 5 m. (5) Use the attached moody diagram to calculate the friction factor f and the density of water to be 1000 kg/m². [25]