Water at $20C$ flows through a $10m$ length of a horizontal $0\mathrm{.}003m$ diameter tube $(=0\mathrm{.}15mm).$ The pressure drop over that length is $17\mathrm{.}2$kPa. Determine the average velocity in the pipe $($in $\frac{m}{s}).$

Determine the velocity at $0\mathrm{.}001m$ from the pipe wall $($in $\frac{m}{s}).$

For Laminar Pipeflow use eqns in FE Handbook

For Turbulent Ripeflow

${}_s=5\frac{v}{u^{**}}$

$u^{**}=(\frac{{}_x}{}{)}^{\frac{1}{2}}$

${}_w=\frac{PD}{4l}$

$v(y)=\frac{y(u^{**}{)}^2}{v}$

$v(r)=V(1-\frac{r}{R}{)}^{\frac{1}{n}}$

$V_c=\frac{V(n+1)(2n+1)}{2n^2}$

Post the average velocity here $($in $\frac{m}{s}).$

Question $2$

Post the velocity at $0\mathrm{.}001m$ here $($in $\frac{m}{s}).$