C3. Water is flowing steadily in a 0.4-m-wide (b) rectangular open channel at a rate of Q =0.2 m³ sec?¹ (Figure C3). If the flow depth is 0.15 m,(a) Determine the flow velocity and whether the flow is subcritical or supercritical.(5 marks)(b) Determine the alternate flow depth if the character of the flow were to change.(5 marks)Note:The critical depth yc for this flow isyc = ((Q^2)/(gb^2))^1/3 (C3a)where g (= 9.81 m sec?²) is the gravitational acceleration.The specific energy Es for this flow i
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