Water flows at rate $0\mathrm{.}5{10}^{-3}\frac{m^3}{s}$ in $750m$ horizontal

pipe with a diameter of $40mm$ and. The dynamic

viscosity is $1\mathrm{.}1410-3$ N$.$s$.m^{-2}$ and the relative

roughness is $0\mathrm{.}00008m1/$determine average velocity of flow in the pipe $2/$determine the Reynolds number$3/$determine the pressure losses $\backslash$Delta p $4/$determine friction factor