Question $4$

Kerosene $($SG $=0\mathrm{.}8,$ dynamic viscosity of $0\mathrm{.}003$ Pascal seconds$)$ flows from the tank shown and

through the $1//4-$inch$-$diameter $($ID$)$ tube. Assume that the head loss through the entrance$/$elbow and

at the exit are $0\mathrm{.}3$ and $1,$ respectively.

$($a$)$ Determine the mean velocity in a tube with friction factor of $0\mathrm{.}02.$

$($b$)$ Using the velocity from part $($a$),$ if the tube is galvanized iron with a roughness of $0\mathrm{.}0005$ ft $,$

determine the pressure drop per foot of tube.