A pipe, diameter $450mm,k_{s}0\mathrm{.}6mm,$ slope $1\mathrm{.}5$ in $100,$ is flowing part$-$full with a water depth of $100mm.$ Are conditions subcritical or supercritical? Answer:$[$supercritical$]$

$7\mathrm{.}7$ If a hydraulic jump takes place in the pipe in Problem $7\mathrm{.}6,$ such that conditions upstream of the jump are as in $7\mathrm{.}6,$ what would be the depth downstream of the jump?

Answer$[0\mathrm{.}18$ m$]$