Cross-section 4 A horizontal pipe conveys water between points, which have diameters d1 = 2548 mm and d2 = 2148 mm respectively. At cross-section 1 the average velocity of the water in the pipe is 0.922 m/s and the pressure is 2.943 bar. Assume that energy losses are negligible. f) Find the total flow rate in the system. g) Find the velocity at cross-section 2. h) Find the pressure at cross-section 2. The pipeline branches just beyond cross-section 2 into two pipes of diameter d3 = 1504 mm and d4 = 1504 mm as shown in the figure. 3 The average velocity at cross-section 3 is of the velocity in the main pipeline at cross-section 2. 4

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