A thick oil is to be pumped along a pipeline with an inside diameter of 100 mm at a rate of 7.0 kg –1 , determine the pressure drop along the pipeline. If the surface of the wall has a roughness of...

A thick oil is to be pumped along a pipeline with an inside diameter of 100 mm at a rate of 7.0 kg^–1, determine the pressure drop along the pipeline. If the surface of the wall has a roughness of 0.046 mm, determine the pressure drop. The density of the crude is 890 kgm^–3
and has a viscosity of 0.002 Nsm^–2.