$10\mathrm{.}2$ The flowrate per unit width in a wide channel is $q=2\mathrm{.}3\frac{m^2}{s}.$ Is the flow subcritical or supercritical if the depth is $($a$)0\mathrm{.}2$ m $,($b$)0\mathrm{.}8$ m $,$ or $($c$)2\mathrm{.}5$ m $?10\mathrm{.}2$ The flowrate per unit width in a wide channel is $q=2\mathrm{.}3\frac{m^2}{s}.$ Is the flow subcritical or supercritical if the depth is $($a$)0\mathrm{.}2$ m $,($b$)0\mathrm{.}8$ m $,$ or $($c$)2\mathrm{.}5$ m $?$