Find the critical depth and critical velocity for the triangular channel of Problem if Q i...

Find the critical depth and critical velocity for the triangular channel of Problem if Q is (a) 10 m3/s and (b) 50 cfs.

Problem

Find the normal depth yn for the triangular channel shown in Figure if S0 = 0.0005 m/m, Q = 40 m3/s, and n = 0.030.

Figure