Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 9, Problem 25CQ
A steady stream of water flowing in a narrow pipe reaches a point where the pipe widens. Does the speed of the water increase, decrease, or remain the same when the pipe widens? Explain.
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Physics of Everyday Phenomena
Ch. 9 - Is it possible for a 100-lb woman to exert a...Ch. 9 - If we measure force in pounds (lb) and distance in...Ch. 9 - The same force is applied to two cylinders that...Ch. 9 - A penny and a quarter are embedded in the concrete...Ch. 9 - Prob. 5CQCh. 9 - The fluid in a hydraulic system pushes against two...Ch. 9 - If the output piston in a hydraulic pump exerts a...Ch. 9 - When a mercury barometer is used to measure...Ch. 9 - Could we use water instead of mercury to make a...Ch. 9 - Prob. 10CQ
Ch. 9 - Could we use water instead of mercury to make a...Ch. 9 - If you climbed a mountain carrying a mercury...Ch. 9 - If you filled an airtight balloon at the top of a...Ch. 9 - When you go over a mountain pass in an automobile,...Ch. 9 - The plunger of a sealed hypodermic syringe...Ch. 9 - Helium is sealed inside a balloon impermeable to...Ch. 9 - Is it possible for a solid metal ball to float in...Ch. 9 - A rectangular metal block is suspended by a string...Ch. 9 - Is it possible for a boat made of concrete to...Ch. 9 - A block of wood is floating in a pool of water. a....Ch. 9 - A large bird lands on a rowboat that is floating...Ch. 9 - Is it possible that some objects might float in...Ch. 9 - A rowboat is floating in a swimming pool when the...Ch. 9 - If an object has a smaller density than water,...Ch. 9 - A steady stream of water flowing in a narrow pipe...Ch. 9 - Why does the stream of water flowing from a faucet...Ch. 9 - Does a stream of liquid with a high viscosity flow...Ch. 9 - If the speed of flow in a stream decreases, is the...Ch. 9 - Why is the flow of smoke from a cigarette often...Ch. 9 - If you blow between two limp pieces of paper held...Ch. 9 - A wind gust blows sideways across an...Ch. 9 - A hair dryer can be used to create a stream of...Ch. 9 - Prob. 33CQCh. 9 - Does the path of a curveball really curve? (See...Ch. 9 - A force of 60 N pushes down on the movable piston...Ch. 9 - A 150-lb woman puts all of her weight on one heel...Ch. 9 - A 270-lb man supports all of his weight on a...Ch. 9 - Prob. 4ECh. 9 - In a hydraulic system, a force of 540 N is exerted...Ch. 9 - The load-bearing piston in a certain hydraulic...Ch. 9 - A column of water in a vertical pipe has a...Ch. 9 - With the temperature held constant, the pressure...Ch. 9 - With the temperature held constant, the piston of...Ch. 9 - A 0.52-kg block of wood is floating in water. What...Ch. 9 - A block of wood of uniform density floats so that...Ch. 9 - A certain boat displaces a volume of 8.3 m3 of...Ch. 9 - A rock with a volume of 0.3 m3 is fully submerged...Ch. 9 - A stream moving with a speed of 3.5 m/s reaches a...Ch. 9 - Water emerges from a faucet at a speed of 1.5 m/s....Ch. 9 - An airplane wing with an average cross-sectional...Ch. 9 - Suppose the input piston of a hydraulic jack has a...Ch. 9 - Prob. 2SPCh. 9 - A copper block with a density of 8960 kg/m3 is...Ch. 9 - A flat-bottomed wooden box is 2.8 m long and 1.3 m...Ch. 9 - A pipe with a circular cross-section has a...
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- A small piece of steel is tied to a block of wood. When the wood is placed in a tub of water with the steel on top, half of the block is submerged. Now the block is inverted so that the steel is under water. (i) Does the amount of the block submerged (a) increase, (b) decrease, or (c) remain the same? (ii) What happens to the water level in the tub when the block is inverted? (a) It rises. (b) It falls. (c) It remains the same.arrow_forwardWater flows through a pipe that gradually descends from a height of 6.78 m to the ground. Near the top, the cross-sectional area is 0.400 m2, and the pipe gradually widens so that its area near the ground is 0.800 m2. Water leaves the pipe at a speed of 16.8 m/s. What is the difference in the water pressure between the top and bottom of the pipe?arrow_forwardA Hydrometer is an instrument used to determine liquid density. A simple one is sketched in Figure P9.84. The bulb of a syringe is squeezed and released to lift a sample of the liquid of interest into a tube containing a calibrated rod of known density. (Assume the rod is cylindrical.) The rod. of length L and average density 0, floats partially immersed in the liquid of density . A length h of the rod protrudes above the surface of the liquid. Show that the density of the liquid is given by =0LLh Figure P9.84arrow_forward
- A hypodermic syringe contain a medicine with the density of water (Fig. P9.37). The barrel of the syringe has a cross-sectional area of in the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force F of magnitude 2.00 N is exerted on the plunger, making medicine squirt from the needle. Determine the medicines How speed through the needle. Assume the pressure in the needle remains equal to 1.00 atm and that the syringe is horizontal. Figure P9.37arrow_forwardFigure 11.35(a) shows the effect of tube radius on the height to which capillary action can raise a fluid. (a) Calculate the height h for water in a glass tube with a radius of 0.900 cm—a rather large tube like the one on the left. (b) What is the radius of the glass tube on the right if it raises water to 4.00 cm?arrow_forwardAn incompressible, nonviscous fluid is initially at rest in the vertical portion of the pipe shown in Figure P15.61a, where L = 2.00 m. When the valve is opened, the fluid flows into the horizontal section of the pipe. What is the fluids speed when all the fluid is in the horizontal section as shown in Figure P15.61b? Assume the cross-sectional area of the entire pipe is constant. Figure P15.61arrow_forward
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