L, w we dagram above, what is the proportionality of fluid flow to the crosssectional area of the pipe and to the third parameter which is represented by arrow in the above diagram? (c) Write down any form of Euler's equation for one-dimensional non viscous fluid flow. (d) Define, explain briefly and give six (6) examples each of a category of physical properties of a matter in a thermodynamic system. Explain three (3) of the examples from each category by citing an example. e) If the mass flow rate is 25kg/s, density of a fluid is 0.871kg/dm3 and crosssection of a pipe are is 1.2103m2, calculate mean velocity of the fluid. Why is this velocity referred to as "mean velocity