Q3. For the piping system shown, all pipes are concrete with a roughness of 0.1 mm. Neglecting minor losses, compute the flow in pipes b, c, and d and the overall pressure drop (p1 - p2 in kilo pascal). The flow rate is 0.5 m³/s of water at 20°C.
b: L=450m, 20cm
a: L=300m, D=30cm
c: D=30cm, L=240m
d: D=37.5cm, L=360m