Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
4th Edition
ISBN: 9780134110684
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Chapter 18, Problem 8EAP
An element in its solid phase has mass density 1750 kg/m3 and number density 4.39 × 1028 atoms/m3. What is the element’s
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The density of gold is 19.32g/cm^3. Do dimensional analysis to figure out how you can approximate the surface density of gold in atoms cm^−2.
A proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm and a mass of 1.67 10-27 kg.Densities of Some Common Substances at Standard Temperature (0°C) and Pressure (Atmospheric)
Substance
ρ (kg/m3)
Substance
ρ (kg/m3)
Air
1.29
Iron
7.86 ✕ 103
Air (at 20°C andatmospheric pressure)
1.20
Lead
11.3 ✕ 103
Aluminum
2.70 ✕ 103
Mercury
13.6 ✕ 103
Benzene
0.879 ✕ 103
Nitrogen gas
1.25
Brass
8.4 ✕ 103
Oak
0.710 ✕ 103
Copper
8.92 ✕ 103
Osmium
22.6 ✕ 103
Ethyl alcohol
0.806 ✕ 103
Oxygen gas
1.43
Fresh water
1.00 ✕ 103
Pine
0.373 ✕ 103
Glycerin
1.26 ✕ 103
Platinum
21.4 ✕ 103
Gold
19.3 ✕ 103
Seawater
1.03 ✕ 103
Helium gas
1.79 ✕ 10−1
Silver
10.5 ✕ 103
Hydrogen gas
8.99 ✕ 10−2
Tin
7.30 ✕ 103
Ice
0.917 ✕ 103
Uranium
19.1 ✕ 103
(a) Determine the density of the proton.kg/m3
The U.S. Mint produces a dollar coin called the American Silver Eagle that is made of nearly pure silver. This coin has a diameter of 41 mmmm and a thickness of 2.5 mmmm. The density and approximate market price of silver are 10.5 g/cm3g/cm3 and $0.58 per gram, respectively.
Calculate the value of the silver in the coin, assuming its thickness is uniform.
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Chapter 18 Solutions
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Ch. 18 - Prob. 1CQCh. 18 - Prob. 2CQCh. 18 - Prob. 3CQCh. 18 - Prob. 4CQCh. 18 - Prob. 5CQCh. 18 - Prob. 6CQCh. 18 - Prob. 7CQCh. 18 - Prob. 8CQCh. 18 - Prob. 9CQCh. 18 - A gas undergoes the process shown in FIGURE...
Ch. 18 - Prob. 11CQCh. 18 - Prob. 12CQCh. 18 - Prob. 1EAPCh. 18 - Prob. 2EAPCh. 18 - What is the diameter of a copper sphere that has...Ch. 18 - Prob. 4EAPCh. 18 - Prob. 5EAPCh. 18 - How many atoms are in a 2.0 cm × 2.0 cm × 2.0 cm...Ch. 18 - Prob. 7EAPCh. 18 - An element in its solid phase has mass density...Ch. 18 - .0 mol of gold is shaped into a sphere. What is...Ch. 18 - What volume of aluminum has the same number of...Ch. 18 - Prob. 11EAPCh. 18 - Prob. 12EAPCh. 18 - Prob. 13EAPCh. 18 - A concrete bridge is built of 325-cm-long concrete...Ch. 18 - A surveyor has a steel measuring tape that is...Ch. 18 - Two students each build a piece of scientific...Ch. 18 - Prob. 17EAPCh. 18 -
18. What is the temperature in °F and the...Ch. 18 - Prob. 19EAPCh. 18 - .0 mol of gas at a temperature of -120°C fills a...Ch. 18 - Prob. 21EAPCh. 18 - Prob. 22EAPCh. 18 - Prob. 23EAPCh. 18 - Prob. 24EAPCh. 18 - Prob. 25EAPCh. 18 - Prob. 26EAPCh. 18 - Prob. 27EAPCh. 18 - Prob. 28EAPCh. 18 - A rigid, hollow sphere is submerged in boiling...Ch. 18 -
30. A rigid container holds hydrogen gas at a...Ch. 18 - Prob. 31EAPCh. 18 - Prob. 32EAPCh. 18 - Prob. 33EAPCh. 18 - Prob. 34EAPCh. 18 - Prob. 35EAPCh. 18 - Prob. 36EAPCh. 18 - Prob. 37EAPCh. 18 - .0050 mol of gas undergoes the process 1 2 3...Ch. 18 - Prob. 39EAPCh. 18 - Prob. 40EAPCh. 18 - Prob. 41EAPCh. 18 - Prob. 42EAPCh. 18 - Prob. 43EAPCh. 18 - A 15°C, 2.0-cm-diameter aluminum bar just barely...Ch. 18 - Prob. 45EAPCh. 18 - Prob. 46EAPCh. 18 - Prob. 47EAPCh. 18 - Prob. 48EAPCh. 18 - Prob. 49EAPCh. 18 - The 3.0-m-long pipe in FIGURE P18.50 is closed at...Ch. 18 - Prob. 51EAPCh. 18 - An electric generating plant boils water to...Ch. 18 - Prob. 53EAPCh. 18 - The air temperature and pressure in a laboratory...Ch. 18 - Prob. 55EAPCh. 18 - The mercury manometer shown in FIGURE P18.56 is...Ch. 18 - Prob. 57EAPCh. 18 - The 50 kg circular piston shown in FIGURE P18.58...Ch. 18 - Prob. 59EAPCh. 18 - .0 g of helium gas follows the process 1? 2 ?3...Ch. 18 - Prob. 61EAPCh. 18 - 62. FIGURE P18.62 shows two different processes...Ch. 18 - Prob. 63EAPCh. 18 - Prob. 64EAPCh. 18 - Prob. 65EAPCh. 18 - Prob. 66EAPCh. 18 - Prob. 67EAPCh. 18 - Prob. 68EAPCh. 18 - Prob. 69EAPCh. 18 - Prob. 70EAPCh. 18 - Prob. 71EAPCh. 18 - The cylinder in FIGURE CP18.72 has a moveable...Ch. 18 - Containers A and B in FIGURE CP18.73 hold the same...Ch. 18 - Prob. 74EAP
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- There is relatively little empty space between atoms in solids and liquids, so that the average density of an atom is about the same as matter on a macroscopic scale—approximately 103kg/m3. The nucleus of an atom has a radius about 10-5 that of the atom and contains nearly all the mass of the entire atom. (a) What is the approximate density of a nucleus? (b) One remnant of a supernova, called a neutron star, can have the density of a nucleus. What would be the radius of a neutron star with a mass 10 times that of our Sun (the radius of the Sun is 7108 m)?arrow_forwardThe element neptunium has a density of 19.6 g/ml. What is the radius of a sphere of this material if it has a mass of 70kg? V=4/3pi r^3arrow_forwardA hollow spherical container has an outer diameter of 10.50 cm. The thickness of the walls is 0.50 cm. The container is filled with water. Water molecules are approximated to be spheres with a diameter of 275 pm. How many water molecules are present inside of the container? Your answer needs to have the correct number of significant figures.arrow_forward
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