Glycerine flows steadily through a horizontal tube of length 1.5m and radius 1.0 cm. if the amount of glycerine collected per second at one end is `4.0 xx 10^(-3) kg s^(-1)`, what is the pressuer difference between the two ends of the tube? (density of glycerine = `1.3xx10^(3)kgm^(-3)` and viscosity of glycerine =`0.83Ns m^(-2)`).