Problem $6\mathrm{.}33($page $305)$: A $3-$m$-$wide horizontal rectangular channel carries $12\mathrm{.}9m^3{s}^{-1}.$ If the

depth at a section is $0\mathrm{.}5m,$ determine the:

$(1)$ Conjugate depth

$(2)$ Length of the hydraulic jump

$(3)$ Energy dissipation by the hydraulic jump

Answers: $(1)7\mathrm{.}52$ m; $(2)136\mathrm{.}22$ m

$(3)105\mathrm{.}26$ m