Question: A rectangular channel with a botton width of 4 m flows at a normal depth of 2 m . The manning n is 0 .

A rectangular channel with a botton width of 4 m flows at a normal depth of 2 m. The manning n is 0.022 and the bed slope 0.0004. The state of flow is: laminal, critical, subcritical, supercritical

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