The cross section of a long tunnel carrying water through
Chapter 10, Problem 10.58(choose chapter or problem)
The cross section of a long tunnel carrying water through a mountain is as indicated in Fig. P10.58. Plot a graph of flowrate as a function of water depth, y, for \(0 \leq y \leq 18 \text{ ft}\). The slope is 2 ft/mi and the surface of the tunnel is rough rock (equivalent to rubble masonry). At what depth is the flowrate maximum? Explain.
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