A viscous liquid (density of 1180 kg/m3 and dynamic viscosity of 0.0045 N s/m2) flows at a volumetric rate of 12.6 mL/s through a horizontal 4mm diameter tube. Determine the pressure drop in kPa along a 2m length of the tube, which is far from the tube entrance so that the only component velocity is parallel to the tube axis. Clear state and justify assumptions. A viscous liquid (density of 1180 kg/m3 and dynamic viscosity of 0.0045 N s/m2) flows at a volumetric rate of 12.6 mL/s through a horizontal 4-mm- diameter tube. After developing the velocity profile of this Poiseuille flow across the 2m long tube, what is the estimated velocity in m/s at a radius of 1.2 mm in the tube?