Lubricating oil (μ = 0.15 N·s/m^{2}, ρ = 920 kg/m^{3}) in a 25 mm laminar pipe, L = 24 m, p_{A} = 550 kPa, p_{B} = 215 kPa, B 17 m higher. Head loss (m) and flow rate (m^{3}/s).