Conceptual Physics (12th Edition)
12th Edition
ISBN: 9780321909107
Author: Paul G. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 12, Problem 38RCQ
Consider these three animals: A. dog, B. horse, and C. elephant. Rank them, from highest to lowest, for their
- surface areas.
- masses.
- weights.
- volumes.
- surface area per weight.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
2. It has been proposed that we could explore Mars using inflated balloons to hover just above the surface. The
buoyancy of the atmosphere would keep the balloon aloft. The density of the Martian atmosphere is p = 0.0154
kg/m³ (although this varies with temperature). Suppose we construct these balloons of a thin but tough plastic
having an area density = 5.10 g/m² (i.e., each square meter has a mass of 5.10 g). We inflate the balloons
with a very light gas whose mass we can neglect.
a) If such a balloon were floating just above the surface of Mars, what forces would be acting on it? Express
each force in terms of the balloon's radius along with the parameters given above, and calculate the necessary
radius for the balloon to be in equilibrium.
b) Calculate the mass of a balloon with the radius you found in part (a).
c) Suppose we release a balloon of this size on Earth, where the density of the atmosphere is 1.3 kg/m³.
Would it go up, go down, or hover in place? Calculate its initial…
E
2. What is the smallest number of whole logs (density = 765 kg/m³, radius = 0.084 m, length = 3.27 m) that can be
used to build a raft that will carry 6 people, each of whom has a mass of 80.0 kg?
logs
MAR 2
27
888
F4
R
%
5
T
G
tv
6
MacBook Air
&
7
H
U
8
A
9
DD
W
F10
zoom X
KL
K
P
by mi
04 M
quies or rne puffer s
True or false ? The ICRU sphere (ICRU, 1980) is a 30 cm diameter, tissue equivalent sphere with a density of 1 g cm-3
Chapter 12 Solutions
Conceptual Physics (12th Edition)
Ch. 12 - Prob. 1RCQCh. 12 - 2. What evidence can you cite for the microscopic...Ch. 12 - 3. What happens to the volume of a loaf of bread...Ch. 12 - Prob. 4RCQCh. 12 - Iridium is not the heaviest atom found in nature....Ch. 12 - Prob. 6RCQCh. 12 - Why do we say that a spring is elastic?Ch. 12 - Prob. 8RCQCh. 12 - What is Hooke’s law? Does it apply to elastic...Ch. 12 - What is meant by the elastic limit for a...
Ch. 12 - If a 1-kg object stretches a spring by 2 cm, how...Ch. 12 - Distinguish between tension and compression.Ch. 12 - What and where is the neutral layer in a beam that...Ch. 12 - Why are the cross-sections of metal beams in the...Ch. 12 - Why were so many vertical columns needed to...Ch. 12 - Is it tension or compression that strengthens an...Ch. 12 - Prob. 17RCQCh. 12 - Prob. 18RCQCh. 12 - Prob. 19RCQCh. 12 - Prob. 20RCQCh. 12 - If the linear dimensions of an object are doubled,...Ch. 12 - Prob. 22RCQCh. 12 - Which requires more food per body weight daily: an...Ch. 12 - 24. Is the saying “The bigger they are, the harder...Ch. 12 - Why can small creatures fall considerable...Ch. 12 - Prob. 26RCQCh. 12 - Simulate atomic close packing with a couple dozen...Ch. 12 - Are you slightly longer while lying down than you...Ch. 12 - Hold an egg vertically and dangle a small chain...Ch. 12 - Prob. 30RCQCh. 12 - What is the weight of a cubic meter of cork? Could...Ch. 12 - Prob. 32RCQCh. 12 - Another spring stretches 4 cm when a load of 10 N...Ch. 12 - Prob. 34RCQCh. 12 - 35. A 19.3-g mass of gold in the form of a cube is...Ch. 12 - In 2009, one of the U.S government’s bailout...Ch. 12 - Prob. 37RCQCh. 12 - Consider these three animals: A. dog, B. horse,...Ch. 12 - Prob. 39RCQCh. 12 - Your friend says that the primary difference...Ch. 12 - Prob. 41RCQCh. 12 - Prob. 42RCQCh. 12 - Prob. 43RCQCh. 12 - Prob. 44RCQCh. 12 - Prob. 45RCQCh. 12 - Prob. 46RCQCh. 12 - 47. In a deep dive, a whale is appreciably...Ch. 12 - Prob. 48RCQCh. 12 - Prob. 49RCQCh. 12 - Prob. 50RCQCh. 12 - Prob. 51RCQCh. 12 - Prob. 52RCQCh. 12 - 53. When you bend a meterstick, one side is under...Ch. 12 - Prob. 54RCQCh. 12 - Prob. 55RCQCh. 12 - Prob. 56RCQCh. 12 - Prob. 57RCQCh. 12 - Prob. 58RCQCh. 12 - Prob. 59RCQCh. 12 - 60. Only with great difficulty can you crush an...Ch. 12 - Prob. 61RCQCh. 12 - Prob. 62RCQCh. 12 - Prob. 63RCQCh. 12 - Prob. 64RCQCh. 12 - Prob. 65RCQCh. 12 - Prob. 66RCQCh. 12 - Prob. 67RCQCh. 12 - Prob. 68RCQCh. 12 - Prob. 69RCQCh. 12 - Prob. 70RCQCh. 12 - Prob. 71RCQCh. 12 - Prob. 72RCQCh. 12 - Prob. 73RCQCh. 12 - Prob. 74RCQCh. 12 - Why are mittens warmer than gloves on a cold day?...Ch. 12 - Prob. 76RCQCh. 12 - Prob. 77RCQCh. 12 - Prob. 78RCQCh. 12 - Prob. 79RCQCh. 12 - Prob. 80RCQCh. 12 - Prob. 81RCQCh. 12 - Prob. 82RCQCh. 12 - The uranium atom is the heaviest and most massive...Ch. 12 - Prob. 84RCQCh. 12 - Prob. 85RCQCh. 12 - If you use a batch of cake batter for cupcakes and...Ch. 12 - Nourishment is obtained from food through the...Ch. 12 - Prob. 88RCQCh. 12 - Prob. 89RCQCh. 12 - Prob. 90RCQCh. 12 - Prob. 91RCQ
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
- 2 Z 2. What is the smallest number of whole logs (density = 760 kg/m³, radius= 0.082 m, length = 2.82 m) that can be used to build a raft that will carry 4 people, each of whom has a mass of 76.5 kg? logs @ 2 W S X H дв command # 3 E D C $ 4 1332 R 20 F G Search or type URL 52 % 5 V T G MacBook Pro 6 B Y H & 7 N U 4 J 1 00 8 - M O ( 9 K O L 1332 jj1332 command P > : t ; { option [ + 11 ? I :- 11arrow_forward# 3) There are a 3cm x 3cm x 3cm cube of gold and a 3cm x 3cm x 3cm cube of aluminum. The density of gold is 19.3 g/cm³ and the density of aluminum is 2.7 g/cm³. Which has a larger mass and what is that mass?arrow_forward1. A deep sea diver is working at a depth where the pressure is 4.0 atmospheres. He is breathing out air bubbles. The volume of each air bubble is 2 cm?. At the surface the pressure is 12 atmospheres. What is the volume of each bubble when it reaches the surface?arrow_forward
- 7. The beds in your dorm room have extra-long mattresses. These mattresses are 80 inches long and 39 inches wide. (Regular twin beds are 72 inches long.) What is the area of the mattress top in m2? (1 inch = 2.54 cm)arrow_forwardPlease Asaparrow_forwardIn the equation, C2=C, py+0.5pv2, if y is distance, g is gravitational acceleration, p is density and P is pressure , then, the dimensions of C, i Select one: O a. LT-1 O b. LT2 O c. ML'T2 O d. L?T2 O e. L-1 T-1arrow_forward
- The Moon's density is 3.3 kg/L. Suppose that the Moon is made of just two substances: silicates with a density of 3.0 kg/L, and iron with a density of 7.9 kg/L. a. What fraction of its mass must be iron? % of the Moon's mass must be iron. b. What fraction of its volume must be iron? % of the Moon's volume is iron.arrow_forward4arrow_forwardThe density of air is 1.29 kg / m. Find the density in g/cm³. O a. 0.00129 g/cm3 O b. 1.29 g/cm3 O C. 0.129 g/ cm³ O d. 0.0129 g/cm2arrow_forward
- 4. The gauge pressure underwater is the difference between atmospheric pressure and absolute pressure. Which of these expressions yields the gauge pressure in SI units at a depth of 751 meters under water of density 1000 kg/m^3? a. 1000 times 9.8 times 751 b. 1000 times 9.8 divided by 751arrow_forward3. a) You have a rock (Rock A) with a volume of 15cm3 and a mass of 45 g. What is its density? AJ b) You have a different rock (Rock B) with a volume of 30cm and a mass of 60g. What is its density? c) In the above two examples which rock is heavier? d) In the above two examples which rock is more dense? Which is less dense? Which is lighter?arrow_forwardPlease answer as much as you can! Thank you in advance! A beachball has a diameter of 24 cm and weighs about 6N. A-What is the volume of the beachball? Then, use this number to calculate the beachball’s average density in kg m-3. B-What is the volume of water displaced by the beachball if it is in the pool? C- Now, using a rope, you tie the beachball to the bottom of the pool so only half of the ball is submerged. What would the diagram look like? D- What is the buoyant force of the tethered beachball? What is the tension on the rope?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
A Level Physics – Ideal Gas Equation; Author: Atomi;https://www.youtube.com/watch?v=k0EFrmah7h0;License: Standard YouTube License, CC-BY