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# © 2010 Pearson Education, Inc. - PowerPoint PPT Presentation

Summary PC142. © 2010 Pearson Education, Inc. Chapter 9, problem 36

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Summary

PC142

Chapter 9, problem 36

A cylinder has a diameter of 15 cm. The water level in the cylinder is maintained at a constant height of 0.45 m. If the diameter of the spout pipe is 0.50 cm, how high is h, the vertical stream of water? (Assume the water to be an ideal fluid.)

Chapter 9, problem 67

As a fire-fighting method, a homeowner in the deep woods rigs up a water pump to bring water from a lake that is 10.0 m  below the level of the house. If the pump is capable of producing a gauge pressure of 140kPa, at what rate (in L/s) can water be pumped to the house assuming the hose has a radius of 5.00 cm?

Chapter 9, problem 48

A solid ball has a weight of 3.0 N. When it is submerged in water, it has an apparent weight of 2.7 N. What is the density of the ball?

Chapter 10, problem 26

A husband buys a helium-filled anniversary balloon for his wife. The balloon has a volume of 3.5 L in the warm store at 74 F. When he takes it outside, where the temperature is 48 F, he finds it has shrunk.

By how much has the volume decreased?

Chapter 10, problem 42

A piece of copper tubing used in plumbing has a length of 60.0 cm and an inner diameter of 1.50 cm  at 20 C.When hot water at 85 C flows through the tube, what is the tube's new length?

When hot water at 85 C flows through the tube, what is the change in its cross-sectional area?

Does the latter affect the flow speed?