The velocity of oil (SG = 0.8) through the 5-cm smooth pipe is 1.2 m/s. Here L = 12 m, z₁ = 1 m, z₂ = 2 m, and the manometer deflection is 10 cm. Determine the flow direction, the resistance coefficient f, whether the flow is laminar or turbulent, and the viscosity of the oil.