Carbon tetrachloride at ambient temperature (viscosity = 0.001 Pas) is flowing through the horizontal piping system as shown below (not drawn to scale). A contraction fitting (also known as a reducing bushing) is used to connect the larger (i.e. 4 cm internal diameter) wrought iron pipe to the smaller (i.e. 2 cm internal diameter) galvanized iron pipe. a. Starting from a steady-state mass balance, write the appropriate equation that relates the average velocities in the two pipes. b. Write the simplified form of the Bernoulli equation for the condition where reference points 1