College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
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 ρavg can be calculated. A widely used equation that relates average body density to fat percentage is the Siri equation, % body fat= (495/ρavg – 450, where ρavg 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?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Your grandmother gave you a gold ring as “pamana" (inheritance). The gold ring
is 5.00 mm thick and has an outside diameter of 12.0 mm and an inside diameter
of 11.0 mm. The density of gold is 1.93 x 104 kg/m³. What is its volume in cubic
millimeters?
If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 60cm×32cm×20cm60cm×32cm×20cm, what would its mass be? The density of gold is 19.3 ×× 1033 kg/m3kg/m3.
A rectangular block of copper alloy has a mass of 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by
4.6 cm. From this data, what is the density of copper?
9386 kg/m³
O 0.112 kg/m³
402938 kg/m3
2650 kg/m3
8922 kg/m³
5498 kg/m³
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. 2CQCh. 13 - You are given an irregularly shaped chunk of...Ch. 13 - Prob. 4CQCh. 13 - Prob. 5CQCh. 13 - Prob. 6CQCh. 13 - Rank in order, from largest to smallest, the...Ch. 13 - Prob. 8CQCh. 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. 12CQCh. 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. 28CQCh. 13 - Prob. 29CQCh. 13 - Is it possible for a fluid in a tube to flow in...Ch. 13 - Prob. 31CQCh. 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. 35MCQCh. 13 - Prob. 36MCQCh. 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. 1PCh. 13 - A standard gold bar stored at Fort Knox, Kentucky,...Ch. 13 - Prob. 3PCh. 13 - Air enclosed in a cylinder has density = 1.4...Ch. 13 - Prob. 5PCh. 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. 8PCh. 13 - A tall cylinder contains 25 cm of water. Oil is...Ch. 13 - Prob. 10PCh. 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. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 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. 33PCh. 13 - Prob. 34PCh. 13 - What does the top pressure gauge in Figure P.13.35...Ch. 13 - Prob. 36PCh. 13 - Prob. 37PCh. 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. 40PCh. 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. 47GPCh. 13 - A friend asks you how much pressure is in your car...Ch. 13 - Prob. 49GPCh. 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. 52GPCh. 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. 56GPCh. 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. 59GPCh. 13 - Prob. 60GPCh. 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. 64GPCh. 13 - Prob. 65GPCh. 13 - Smoking tobacco is bad for your circulatory...Ch. 13 - A stiff, 10-cm-long tube with an inner diameter of...Ch. 13 - Prob. 68MSPPCh. 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
Additional Science Textbook Solutions
Find more solutions based on key concepts
A long, hollow conducting pipe of radius R carries a uniform current I along the pipe, as shown in Fig. 26.46. ...
Essential University Physics (3rd Edition)
How does the direction of a friction force compare with the direction of motion of a sliding object?
Conceptual Integrated Science
72. A 9.60 µC point charge is at the center of a cube with sides of length 0.500 m. (a) What is the electric fl...
College Physics (10th Edition)
91. When your car moves along the highway at constant velocity, the net force on it is zero. Why, then, do you ...
Conceptual Physical Science (6th Edition)
Are the seasons (summer or winter) the same in the Northern and Southern Hemispheres at the same time? When it ...
Lecture- Tutorials for Introductory Astronomy
Using the definitions in Eqs. 1.1 and 1.4, and appropriate diagrams, show that the dot product and cross produc...
Introduction to Electrodynamics
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- How many cubic meters of helium are required to lift a light balloon with a 400-kg payload to a height of 8 000 m? Take Hc = 0.179 kg/m3. Assume the balloon maintains a constant volume and the density of air decreases with the altitude z according to the expression pair = 0e-z/8 000, where z is in meters and 0 = 1.20 kg/m3 is the density of air at sea level.arrow_forwardA rod extending between x = 0 and x = 14.0 cm has uniform cross-sectional area A = 9.00 cm2. Its density increases steadily between its ends from 2.70 g/cm3 to 19.3 g/cm3. (a) Identify the constants B and C required in the expression = B + Cx to describe the variable density. (b) The mass of the rod is given by m=allmaterialdV=allxAdx=014.0cm(B+Cx)(9.00cm2)dx Carry out the integration to find the mass of the rod.arrow_forwardA horizontal pipe 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 8.00 104 Pa and the pressure in the smaller pipe is 6.00 104 Pa, at what rate does water flow through the pipes?arrow_forward
- Show that 3, by calculating the change in volume V of a cube with sides of length L.arrow_forwardMercury is poured into a U-tube as shown in Figure P15.17a. The left arm of the tube has cross-sectional area A1 of 10.0 cm2, and the right arm has a cross-sectional area A2 of 5.00 cm2. One hundred grams of water are then poured into the right arm as shown in Figure P15.17b. (a) Determine the length of the water column in the right arm of the U-tube. (b) Given that the density of mercury is 13.6 g/cm3, what distance h does the mercury rise in the left arm?arrow_forwardA certain pure 0.9999 gold bullion bar with a mass of 311 g has a volume of 16.1 cm3. What is the density of gold in appropriate SI units?arrow_forward
- A hollow copper (Cu = 8.92 103 kg/m3) spherical shell of mass m = 0.950 kg floats on water with its entire volume below the surface. a. What is the radius of the sphere? b. What is the thickness of the shell wall?arrow_forwardA rock with a mass of 540 g in air is found to have an apparent mass of 342 g when submerged in water. (a) What mass of water is displaced? (b) What is the volume of the rock? (c) What is its average density? Is this consistent with the value for granite?arrow_forwardSuppose you are at the top of Mount Everest and you fill a water balloon. The air pressure at the top of Mount Everest is 58 kPa. a. What is the fractional change in the balloons volume V/Vi when you take it to sea level? b. If instead you take it 100 m below the surface of the ocean, what is the fractional change in its volume?arrow_forward
- The inside volume of a house is equivalent to that of a rectangular solid 13.0 m wide by 200 m long by 2.75 m high. The house is heated by a forced air gas heater. The main uptake air duct of heater is 0.300 m in diameter. What is the average speed of the duct if it carries a volume equal to that of the house’s interior every 15 minutes?arrow_forwardThe density of platinum is 21500 kg/m3 and that of aluminum is 2702 kg/m3. Find the ratio of the volume of 1.20 kg of platinum to the volume of 1.01 kg of aluminum.arrow_forwardAlloys of gold are rated in karats, a dimensionless unit that is used to indicate the proportion of gold by weight in a gold-containing alloy. If an alloy is one part in twenty-four pure gold, then it is classified as one karat gold. The density of gold is 19.3 ✕ 103 kg/m3. Determine the volume of gold in a 13.0 karat gold necklace that has a weight of 1.83 N.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
How to Calculate Density of Liquids - With Examples; Author: cleanairfilms;https://www.youtube.com/watch?v=DVQMWihs3wQ;License: Standard YouTube License, CC-BY