Glycerine flows steadily through a horizontal tube of length 1.5 m and radius 1.0 cm. If the amount of glycerine collected per second at one end is `4.0 × 10^(–3)` kg `s^(–1)` , what is the pressure difference between the two ends of the tube ? (Density of glycerine = `1.3 × 10^(–3)` kg `m^(–3)` and viscosity of glycerine = 0.83 Pa s). [You may also like to check if the assumption of laminar flow in the tube is correct].