Chapter 12: Q27CQ (page 427)
Sink drains often have a device such as that shown in Figure 12.28 to help speed the flow of water. How does this work?
Short Answer
The device helps to increase the flow rate of water.
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Chapter 12: Q27CQ (page 427)
Sink drains often have a device such as that shown in Figure 12.28 to help speed the flow of water. How does this work?
The device helps to increase the flow rate of water.
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Some chimney pipes have a T-shape, with a crosspiece on top that helps draw up gases whenever there is even a slight breeze. Explain how thisworks in terms of Bernoulli’s principle.
The old rubber boot shown in Figure 12.26 has two leaks. To what maximum height can the water squirt from Leak 1? How does the velocity of water emerging from Leak 2 differ from that of leak 1? Explain your responses in terms of energy.
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Plumbing usually includes air-filled tubes near water faucets, as shown in Figure 12.27. Explain why they are needed and how they work.
Some ceiling fans have decorative wicker reeds on their blades. Discuss whether these fans are as quiet and efficient as those with smooth blades.
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