Question
Asked Dec 23, 2019
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Water flows along a streamline down a river of constant width (Fig. CQ9.7). Over a short distance the water slows from speed v to v/3. Which of the following can you correctly conclude about the river’s depth? (a) It became deeper by a factor of 3. (b) It became shallower by a factor of 3. (c) It became deeper by a factor of 32. (d) It became shallower by a factor of 32.

Figure CQ9.7
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Figure CQ9.7

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Expert Answer

Step 1

From continuity equation,

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AV = 4V½ Кwи -Lwy,

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Step 2

Here, width is...

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Lv=L

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Science

Physics

Fluid Mechanics

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