A polymer of density $=800$ kg$/$m$3$ and viscosity $=230$ mPa s flows at

a rate Q$=0\mathrm{.}00156$ m$3$

$/$s in a horizontal pipe of diameter $10$ cm$.$

Evaluate the following:

a$)$ The mean $($average$)$ velocity

b$)$ The Reynolds number Re$.$ Is the flow laminar?

c$)$ The pressure drop per unit length

d$)$ The frictional dissipation $($losses due to friction$)$ for $100$ cm of pipe.