ch14-p051 - 51. This problem involves use of continuity...

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51. This problem involves use of continuity equation (Eq. 14-23): 11 2 2 Av = . (a) Initially the flow speed is 1.5 m/s i v = and the cross-sectional area is i AH D = . At point a , as can be seen from Fig. 14-47, the cross-sectional area is () ( ) a h D b h d =− . Thus, by continuity equation, the speed at point a is (14 m)(55 m)(1.5 m/s) 2.96 m/s ( ) ( ) (14 m 0.80 m)(55 m) (12 m 0.80 m)(30 m)
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