College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Textbook Question

Chapter 13, Problem 42GP

As discussed in Section 13.3, a person’s percentage of body fat can be estimated by weighing the person both in air and underwater, from which the average density ρ_avg can be calculated. A widely used equation that relates average body density to fat percentage is the Siri equation, % body fat= (495/ρ_avg – 450, where ρ_avg is measured in g/cm³. One person’s weight in air is 947 N while his weight underwater is 44 N. What is his percentage of body fat?

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Chapter 13, Problem 41GP

Chapter 13, Problem 43GP

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Chapter 13 Solutions

College Physics: A Strategic Approach (3rd Edition)

Ch. 13 - Which has the greater density, 1 g of mercury or...Ch. 13 - Prob. 2CQ Ch. 13 - You are given an irregularly shaped chunk of...Ch. 13 - Prob. 4CQ Ch. 13 - Prob. 5CQ Ch. 13 - Prob. 6CQ Ch. 13 - Rank in order, from largest to smallest, the...Ch. 13 - Prob. 8CQ Ch. 13 - A steel cylinder at sea level contains air at a...Ch. 13 - In Figure Q.13.10, A and B are rectangular tanks...

Ch. 13 - Imagine a square column of the atmosphere, 1 m on...Ch. 13 - Prob. 12CQ Ch. 13 - In Figure Q.13.13, is pA larger, smaller, or equal...Ch. 13 - A beaker of water rests on a scale. A metal ball...Ch. 13 - Rank in order, from largest to smallest, the...Ch. 13 - Objects A, B, and C in Figure Q.13.16 have the...Ch. 13 - Refer to Figure Q.13.16. Now A, B, and C have the...Ch. 13 - A heavy lead block and a light aluminum block of...Ch. 13 - When you stand on a bathroom scale, it reads 700...Ch. 13 - Suppose you stand on a bathroom scale that is on...Ch. 13 - When you place an egg in water, it sinks. If you...Ch. 13 - The water of the Dead Sea is extremely salty,...Ch. 13 - Fish can adjust their buoyancy with an organ...Ch. 13 - Figure Q.13.24 shows two identical beakers filled...Ch. 13 - A tub of water, filled to the brim, sits on a...Ch. 13 - Ships A and B have the same height and the same...Ch. 13 - Gas flows through a pipe, as shown in Figure...Ch. 13 - Prob. 28CQ Ch. 13 - Prob. 29CQ Ch. 13 - Is it possible for a fluid in a tube to flow in...Ch. 13 - Prob. 31CQ Ch. 13 - Two pipes have the same inner cross-section area....Ch. 13 - Figure Q.13.33 shows a 100 g block of copper ( =...Ch. 13 - Masses A and B rest on very light pistons that...Ch. 13 - Prob. 35MCQ Ch. 13 - Prob. 36MCQ Ch. 13 - A large beaker of water is filled to its rim with...Ch. 13 - An object floats in water, with 75% of its volume...Ch. 13 - A syringe is being used to squirt water as shown...Ch. 13 - Water flows through a 4.0-cm-diameter horizontal...Ch. 13 - A 15-m-long garden hose has an inner diameter of...Ch. 13 - Prob. 1P Ch. 13 - A standard gold bar stored at Fort Knox, Kentucky,...Ch. 13 - Prob. 3P Ch. 13 - Air enclosed in a cylinder has density = 1.4...Ch. 13 - Prob. 5P Ch. 13 - Ethyl alcohol has been added to 200 mL of water in...Ch. 13 - The average density of the body of a fish is 1080...Ch. 13 - Prob. 8P Ch. 13 - A tall cylinder contains 25 cm of water. Oil is...Ch. 13 - Prob. 10P Ch. 13 - A 35-cm-tall, 5.0-cm-diameter cylindrical beaker...Ch. 13 - The gauge pressure at the bottom of a cylinder of...Ch. 13 - A research submarine has a 20-cm-diameter window...Ch. 13 - The highest that George can suck water up a very...Ch. 13 - Prob. 15P Ch. 13 - Prob. 16P Ch. 13 - Prob. 17P Ch. 13 - Glycerin is poured into an open U-shaped tube...Ch. 13 - A U-shaped tube, open to the air on both ends,...Ch. 13 - What is the height of a water barometer at...Ch. 13 - Postural hypotension is the occurrence of low...Ch. 13 - A 6.00-cm-diameter sphere with a mass of 89.3 g is...Ch. 13 - A cargo barge is loaded in a saltwater harbor for...Ch. 13 - A 10 cm 10 cm 10 cm wood block with a density of...Ch. 13 - What is the tension in the string in Figure...Ch. 13 - What is the tension in the string in Figure...Ch. 13 - A 10 cm 10 cm 10 cm block of steel steel = 7900...Ch. 13 - To determine an athletes body fat, she is weighed...Ch. 13 - Styrofoam has a density of 32 kg/m3. What is the...Ch. 13 - Calculate the buoyant force due to the surrounding...Ch. 13 - River Pascal with a volume flow rate of 5.0 105...Ch. 13 - Water flowing through a 2.0-cm-diameter pipe can...Ch. 13 - Prob. 33P Ch. 13 - Prob. 34P Ch. 13 - What does the top pressure gauge in Figure P.13.35...Ch. 13 - Prob. 36P Ch. 13 - Prob. 37P Ch. 13 - What pressure difference is required between the...Ch. 13 - Water flows at 0.25 L/s through a 10-m-long garden...Ch. 13 - Prob. 40P Ch. 13 - The density of gold is 19,300 kg/m3. 197 g of gold...Ch. 13 - As discussed in Section 13.3, a persons percentage...Ch. 13 - The density of aluminum is 2700 kg/m3. How many...Ch. 13 - A 50-cm-thick layer of oil floats on a...Ch. 13 - An oil layer floats on 85 cm of water in a tank....Ch. 13 - The little Dutch boy saved Holland by sticking his...Ch. 13 - Prob. 47GP Ch. 13 - A friend asks you how much pressure is in your car...Ch. 13 - Prob. 49GP Ch. 13 - A 6.0-cm-tall cylinder floats in water with its...Ch. 13 - A sphere completely submerged in water is tethered...Ch. 13 - Prob. 52GP Ch. 13 - A 5.0 kg rock whose density is 4800 kg/m3 is...Ch. 13 - A flat slab of styrofoam, with a density of 32...Ch. 13 - A 2.0 mL syringe has an inner diameter of 6.0 mm,...Ch. 13 - Prob. 56GP Ch. 13 - The leaves of a tree lose water to the atmosphere...Ch. 13 - II A hurricane wind blows across a 6.00 m 5.0 m...Ch. 13 - Prob. 59GP Ch. 13 - Prob. 60GP Ch. 13 - Air at 20C flows through the tube shown in Figure...Ch. 13 - Air at 20C flows through the tube shown in Figure...Ch. 13 - Water flows at 5.0 L/s through a horizontal pipe...Ch. 13 - Prob. 64GP Ch. 13 - Prob. 65GP Ch. 13 - Smoking tobacco is bad for your circulatory...Ch. 13 - A stiff, 10-cm-long tube with an inner diameter of...Ch. 13 - Prob. 68MSPP Ch. 13 - Because the flow speed in your capillaries is much...Ch. 13 - Suppose that in response to some stimulus a small...Ch. 13 - Prob. 71MSPP

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