Bruce R. Munson, Theodore H. Okiishi, Wade W. Huebsch
ISBN #9781118116135
7th Edition
1,369 Questions
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On a distant planet small-amplitude waves travel across a 1 -m-deep pond with a speed of $5 \mathrm{m} / \mathrm{s}$. Determine the acceleration of gravity on the surface of that planet.
The flowrate in a 50 -ft-wide, 2 -ft-deep river is $Q=$ 190 cfs. Is the flow subcritical or supercritical?
The flowrate per unit width in a wide channel is $q=$ $2.3 \mathrm{m}^{2} / \mathrm{s} .$ Is the flow subcritical or supercritical if the depth is $0.2 \mathrm{m},$ (b) $0.8 \mathrm{m},$ or (c) $2.5 \mathrm{m} ?$
A rectangular channel $3 \mathrm{m}$ wide carries $10 \mathrm{m}^{3} / \mathrm{s}$ at a depth of $2 \mathrm{m}$. Is the flow subcritical or supercritical? For the same flowrate, what depth will give critical flow?
Determine the critical depth for a flow of $200 \mathrm{m}^{3} / \mathrm{s}$ through a rectangular channel of 10 -m width. If the water flows $3.8-\mathrm{m}$ deep, is the flow supercritical? Explain.