the rectangular siphon shown has a

constant cross section of $1$m x $1$m and is

$40$m long. The distance between the

entrance and the crown is $10$m$.$ The

friction factor f $=0\mathrm{.}025,$ the inlet coeff $=$

$0\mathrm{.}1,$ the bend loss coeff $=0\mathrm{.}8$ at the

crown, and the exit loss coeff $=1\mathrm{.}0.$

Determine the discharge and the pressure

head at the crown section.