College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 11, Problem 19CQ
To determine
The way the column formedby the sandbags will have the ability to balance the water behind the levee.
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Chapter 11 Solutions
College Physics
Ch. 11 - What physical characteristic distinguishes a fluid...Ch. 11 - Which of the following substances are fluids at...Ch. 11 - Why are gases easier to compress than liquids and...Ch. 11 - How do gases differ from liquids?Ch. 11 - Approximately how does the density of air vary...Ch. 11 - Give an example in which density is used to...Ch. 11 - Prob. 7CQCh. 11 - How is pressure related to the sharpness of a...Ch. 11 - Why does a dull hypodermic needle hurt more than a...Ch. 11 - The outward force on one end of an air tank was...
Ch. 11 - Why is force exerted by static fluids always...Ch. 11 - In a remote location near the North Pole, an...Ch. 11 - How do jogging on soft ground and wearing padded...Ch. 11 - Toe dancing (as in ballet) is much harder on toes...Ch. 11 - How do you convert pressure units like millimeters...Ch. 11 - Atmospheric pressure exerts a large force (equal...Ch. 11 - Why does atmospheric pressure decrease more...Ch. 11 - What are two reasons why mercury rather than water...Ch. 11 - Prob. 19CQCh. 11 - Why is it difficult to swim under water in the...Ch. 11 - Is there a net force on a due to atmospheric...Ch. 11 - Does atmospheric pressure add to the gas pressure...Ch. 11 - You can break a strong wine bottle by pounding a...Ch. 11 - Suppose the master cylinder in a hydraulic system...Ch. 11 - Explain why the fluid reaches equal levels on...Ch. 11 - Prob. 26CQCh. 11 - Considering the magnitude of typical arterial...Ch. 11 - More force is required to pull the plug in a full...Ch. 11 - Do fluids exert buoyant forces in a "weightless"...Ch. 11 - Will the same ship float higher in salt water than...Ch. 11 - Marbles dropped into a partially filled bathtub...Ch. 11 - The density of oil is less than that of water, yet...Ch. 11 - Is surface tension due to cohesive or adhesive...Ch. 11 - Is capillary action due to cohesive or adhesive...Ch. 11 - Birds such as ducks, geese, and swans have greater...Ch. 11 - Water beads up on an oily sunbather, but not on...Ch. 11 - Could capillary action be used to move fluids in a...Ch. 11 - What effect does capillary action have on the...Ch. 11 - Pressure between the inside chest wall and the...Ch. 11 - Gold is sold by the troy ounce (31.103 g). What is...Ch. 11 - Mercury is commonly supplied in flasks containing...Ch. 11 - (a) What is the mass of a deep breath of air...Ch. 11 - A straightforward method of finding the density of...Ch. 11 - Suppose you have a coffee mug with a circular...Ch. 11 - (a) A rectangular gasoline tank can hold 50.0 kg...Ch. 11 - A trash compactor can reduce the volume of its...Ch. 11 - A 2.50-kg steel gasoline can holds 20.0 L of...Ch. 11 - What is the density of 18.0-karat gold that is a...Ch. 11 - There is relatively little empty space between...Ch. 11 - As a woman walks, her entire weight is momentarily...Ch. 11 - The pressure exerted by a phonograph needle on a...Ch. 11 - Nail tips exert tremendous pressures when they are...Ch. 11 - What depth of mercury creates a pressure of 1.00...Ch. 11 - The greatest ocean depths on the Earth are found...Ch. 11 - Verify that the SI unit of hpg is N/m2.Ch. 11 - Water towers store water above the level of...Ch. 11 - The aqueous humor in a person's eye is exerting a...Ch. 11 - How much force is exerted on one side of an 8.50...Ch. 11 - What pressure is exerted on the bottom of a...Ch. 11 - Calculate the average pressure exerted on the palm...Ch. 11 - The left side of the heart creates a pressure of...Ch. 11 - Prob. 23PECh. 11 - How much pressure is transmitted in the hydraulic...Ch. 11 - What force must be exerted on the master cylinder...Ch. 11 - A crass host pours the remnants of several bottles...Ch. 11 - A certain hydraulic system is designed to exert a...Ch. 11 - (a) Verify that work input equals work output for...Ch. 11 - Prob. 29PECh. 11 - (a) Convert normal blood pressure readings of 120...Ch. 11 - How tall must a water-filled manometer be to...Ch. 11 - Pressure cookers have been around for more than...Ch. 11 - Suppose you measure a standing person's blood...Ch. 11 - A submarine is stranded on the bottom of the ocean...Ch. 11 - Assuming bicycle tires are perfectly flexible and...Ch. 11 - What fraction of ice is submerged when it floats...Ch. 11 - Logs sometimes float vertically in a lake because...Ch. 11 - Find the density of a fluid in which a hydrometer...Ch. 11 - If your body has a density of 995 kg/m3, what...Ch. 11 - Bird bones have air pockets in them to reduce...Ch. 11 - A rock with a mass of 540 g in air is found to...Ch. 11 - Archimedes' principle can be used to calculate the...Ch. 11 - In an immersion measurement of a woman's density,...Ch. 11 - Some fish have a density slightly less than that...Ch. 11 - (a) Calculate the buoyant force on a 2.00-L helium...Ch. 11 - (a) What is the density of a woman who floats in...Ch. 11 - A certain man has a mass of 80 kg and a density of...Ch. 11 - A simple compass can be made by placing a small...Ch. 11 - What fraction of an iron anchor's weight will be...Ch. 11 - Scurrilous con artists have been known to...Ch. 11 - A twin-sized air mattress used for camping has...Ch. 11 - Prob. 52PECh. 11 - (a) A 75.0-kg man floats in freshwater with 3.00%...Ch. 11 - What is the pressure inside an alveolus having a...Ch. 11 - (a) The pressure inside an alveolus with a 2.00104...Ch. 11 - What is the gauge pressure in millimeters of...Ch. 11 - Prob. 57PECh. 11 - Prob. 58PECh. 11 - Prob. 59PECh. 11 - Prob. 60PECh. 11 - If the gauge pressure inside a rubber balloon with...Ch. 11 - Calculate the gauge pressures inside...Ch. 11 - Suppose water is raised by capillary action to a...Ch. 11 - Calculate the contact angle for olive oil if...Ch. 11 - When two soap bubbles touch, the larger is...Ch. 11 - Calculate the ratio of the heights to which water...Ch. 11 - What is the ratio of heights to which ethyl...Ch. 11 - During forced exhalation, such as when blowing up...Ch. 11 - You can chew through very tough objects with your...Ch. 11 - One way to force air into an unconscious person's...Ch. 11 - Heroes in movies hide beneath water and breathe...Ch. 11 - Gauge pressure in the fluid surrounding an...Ch. 11 - A full-term fetus typically has a mass of 3.50 kg....Ch. 11 - If the pressure in the esophagus is -2.00 mm Hg...Ch. 11 - Prob. 75PECh. 11 - Calculate the maximum force in newtons exerted by...Ch. 11 - During heavy lifting, a disk between spinal...Ch. 11 - When a person sits erect, increasing the vertical...Ch. 11 - (a) How high will water rise in a glass capillary...Ch. 11 - Prob. 80PECh. 11 - Suppose you hit a steel nail with a 0.500-kg...Ch. 11 - Calculate the pressure due to the ocean at the...Ch. 11 - Prob. 83PECh. 11 - Some miners wish to remove water from a mine...Ch. 11 - You are pumping up a bicycle tire with a hand...Ch. 11 - Consider a group of people trying to stay afloat...Ch. 11 - The alveoli in emphysema victims are damaged and...Ch. 11 - Prob. 1TPCh. 11 - Prob. 2TPCh. 11 - Prob. 3TPCh. 11 - Prob. 4TPCh. 11 - Prob. 5TP
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- What is the average flow rate in cm3/s of gasoline to the engine of a car traveling at 100 km/h if it averages 10.0 km/L?arrow_forwardA sump pump (used to drain water from be basement of houses built below the water table) is draining a flooded basement at rate of 0.750 L/S, with an output pressure of 3.00105N/m2 . (a) The water enters a hose with a 3.00-cm inside diameter and rises 2.50 m above the pump. What is its pressure at this point? (b) The hose goes over the foundation wall, losing 0.500 m in height and widens to 4.00 cm in diameter. What is the pressure now? You may neglect frictional losses both parts of the problem.arrow_forward(a) Verify that a 19.0% decrease in laminar flow through a tube is caused by a 5.00% decrease in radius, assuming that all other factors remain constant. (b) What increase in flow is obtained from a 5.00% increase in radius, again assuming all other factors remain constant?arrow_forward
- An oil gusher shoots crude 25.0 m the through a pipe with a 0.100-m diameter. Neglecting resistance but not resistance of the pipe, and assuming laminar flow, calculate pressure at be entrance of be 50.0-m-Iong vertical pipe. Take of the oil to be 900 kg/m3 and its viscosity to be 100(N/m2) s (or 1.00 Pa s). Note that you must take into account the pressure due to 50.0-m column of oil in pipe.arrow_forwardWater towers store water above the level of consumers for times of heavy use, eliminating need for high-speed pumps. How high above a user must the water level be to create a gauge pressure of 3.00105 N/m2?arrow_forwardIn an immersion measurement of a woman's density, she is found to have a mass of 62.0 kg in air an apparent mass of 0.0850 kg completely submerged with lungs empty. (a) What of water does she displace? (b) What is her volume? (c) Calculate her density. (d) If her lung capacity is 1.7S L, is she able to that without treading water with her lungs filled air?arrow_forward
- Is there a net force on a dam due to atmospheric pressure? Explain your answer.arrow_forwardFluid originally flows through a tube at a rate of 100 cm3/s. To illustrate the sensitivity of flow rate to various factors, calculate be new flow rate for following changes with all other factors remaining the same as in original conditions. (a) Pressure difference increases by a factor of 1.50. (b) A new fluid wit 3.00 times greater viscosity is substituted. (c) The tube is replaced by one having 4.00 times the length. (d) Another tube used with a 0.100 times the original. (e) Yet another tube is substituted with a radius 0.100 times the original and half length, and pressure difference is increased by factor of 1.50.arrow_forwardWater emerges straight down from a faucet with a 1.80-cm diameter at a speed of 0.500 m/s. (Because of the construction of the faucet, there is no variation in speed across the stream.) (a) What is flow rate in cm3/s? (b) What is the diameter of the stream 0.200 m below the faucet? Neglect any effects due to surface tension.arrow_forward
- If a person's body has a density of 995 kg/m3, what fraction of the body will be submerged when floating gently in (a) freshwater? (b) In salt water with a density of 1027 kg/m3?arrow_forwardWhat is density of a woman floats in fresh water with 4.00% of her volume above the surface? (This could be measured by placing her in a Wii marks on the side to measure how much water she displaces when floating and when held under water.) (b) What percent of her volume is above surface when she floats in seawater?arrow_forwardWhy is it difficult to swim under water in the Great Salt Lake?arrow_forward
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