Question $9$ a$.$

A hydrofoil $0\mathrm{.}35$ m long and $1\mathrm{.}8$ m wide is placed in a seawater flow of $12\frac{m}{s}$ with the mass

density $p=1025k\frac{g}{m^3}$ and kinematic viscosity $v=1\mathrm{.}044{10}^{-6}\frac{m^2}{s}.$

$($i$)$ Estimate the boundary layer thickness at the end of the plate

$($ii$)$ Estimate the friction drag coefficient and force for turbulent smooth$-$wall flow from leading

edge

$($iii$)$ Estimate the friction drag coefficient and force for laminar turbulent flow with Reynold

number $R{e}_{\text{r}\text{r}\text{a}\text{n}\text{s}}=5{10}^5$