a. Write the vector form of the continuity equation for an incompressible fluid. (1 mark) b. What two conditions are required for flow similarity? (2 marks) c. What is the critical value of Reynolds number for flow in a pipe? (1 mark) d. For laminar and turbulent flow in a smooth pipe, compare the pressure drop dependence on flow rate. (2 marks) e. The Bernoulli equation is also referred to as the mechanical energy balance. Show how the terms in the Bernoulli equation with units of m2/s2 represent units of energy. (2 marks)