Section $8\mathrm{.}2$ Examine the following figures: $8\mathrm{.}7,8\mathrm{.}8$ and $8\mathrm{.}9.$ Also, you should know Poiseuille's law.

$3.$ Determine the volumetric flow rate, average speed, and Reynolds # for $20C$ glycerin flowing in a $10$ foot long $4"$ diameter pipe with pressure drop $0\mathrm{.}2$ psi using Poiseuille's Law. $(0\mathrm{.}0279f\frac{t^3}{sec,0\mathrm{.}32\text{f}\text{e}\text{e}\frac{t}{sec}},8\mathrm{.}3)$