3) Water flows in a parallel pipe system having valves as shown in figure below. If the discharge through the first pipe is Qi is 3 m/s, find the discharges in the other pipes, where L-length of the pipe, D-diameter of the pipe, f-friction factor, K=minor loss coefficient. Elv =20 m Elv 0 m 2 DO DO 4 Given: Pipe L (m) D (mm) f | 1 90 1250 0.018 2.5 2 1025 1000 0.022 2 3 1480 550 0.020 wl 3 st 4 820 750 0.015 3.5