3(b) A smooth pipe of 80mm diameter and 1000m long is carrying water at the rate of 8 litres/sec. If the kinematic viscosity of water is 0.015 stokes and the value of co-efficient of friction ( f ) is given by the relation: f=Re0.250.0791, where Re is Reynolds number, Calculate: (i) Loss of head, and (ii) Wall shearing stress [4 Marks]