University Physics Volume 3
17th Edition
ISBN: 9781938168185
Author: William Moebs, Jeff Sanny
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 5, Problem 13CQ
All galaxies farther away than about exhibit a red shift in their emitted light that is proportional to distance, with those farther and farther away having progressively greater red shifts. What does this imply, assuming that the only source of red shift is relative motion?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
If you were traveling away from a planet at 99% the speed of light, and turned on a
flash light pointing behind you (toward the planet), a person on the planet's surface
would see the light moving toward them at 1% the speed of light.
O True
O False
bp
The frequency of light reaching Earth froma particular galaxy is 15% lower than the frequency the light hadwhen it was emitted. (a) Is this galaxy moving toward or awayfrom Earth? Explain. (b) What is the speed of this galaxy relativeto the Earth? Give your answer as a fraction of the speed of light.
The farthest objects in our Universe discovered by modern astronomers are so distant that light emitted by them takes billions of years to reach the Earth. These objects (known as quasars) have many puzzling features, which have not yet been satisfactorily explained. What is the distance in km of a quasar from which light takes 3.0 billion years to reach us ?
Chapter 5 Solutions
University Physics Volume 3
Ch. 5 - Check Your Understanding Explain how special...Ch. 5 - Check Your Understanding What is if v=0.650c?Ch. 5 - Check Your Understanding a. A particle travels at...Ch. 5 - Check Your Understanding A particle is traveling...Ch. 5 - Check Your Understanding Shaw that if a time...Ch. 5 - Check Your Understanding Distances along a...Ch. 5 - Check Your Understanding Suppose a space probe...Ch. 5 - Check Your Understanding What is the momentum of...Ch. 5 - Check Your Understanding What is the kinetic...Ch. 5 - Which of Einstein’s postulates of special...
Ch. 5 - Is Earth an inertial frame of reference? Is the...Ch. 5 - When you are flying in a commercial jet, it may...Ch. 5 - (a) Does motion affect the rate of a clock as...Ch. 5 - To whom does the elapsed time for a process seem...Ch. 5 - (a) How could you travel far into the future of...Ch. 5 - To whom does an object seem greater in length, an...Ch. 5 - Relativistic effects such as time dilation and...Ch. 5 - Suppose an astronaut is moving relative to Earth...Ch. 5 - Explain the meaning of the terms "red shift" and '...Ch. 5 - What happens to the relativistic Doppler effect...Ch. 5 - Is the relativistic Doppler effect consistent with...Ch. 5 - All galaxies farther away than about exhibit a red...Ch. 5 - How does modern relativity modify the law of...Ch. 5 - Is it possible for an external force to be acting...Ch. 5 - How are the classical laws of conservation of...Ch. 5 - What happens to the mass of water in a pot when it...Ch. 5 - Consider a thought experiment. You place an...Ch. 5 - The mass of the fuel in a nuclear reactor...Ch. 5 - We know that the velocity of an object with mass...Ch. 5 - Given the fact that light travels at c, can it...Ch. 5 - If you use an Earth based telescope to project a...Ch. 5 - What is if (b) IfCh. 5 - What is if IfCh. 5 - Particles called mesons are produced by...Ch. 5 - Suppose a particle called a kaon is created by...Ch. 5 - A neutral meson is a particle that can be created...Ch. 5 - A neutron lives 900 s when at rest relative to a...Ch. 5 - If relativistic effects are to be less than then...Ch. 5 - If relativistic effects are to be less than then...Ch. 5 - A spaceship, 200 m long as. seen on board, moves...Ch. 5 - How fast would a 6.0 m-long sports car have to be...Ch. 5 - (a) How far does the muon in Example 5.3 travel...Ch. 5 - (a) How long would the mum] in Example 5.3 have...Ch. 5 - Unreasonable Results A spaceship is heading...Ch. 5 - Describe the following physical occurrences as...Ch. 5 - Describe what happens to the angle and therefore...Ch. 5 - Describe the shape of the world line on a...Ch. 5 - A man standing still at a train station watches...Ch. 5 - When observed from the sun at a particular...Ch. 5 - A man is running on a straight road perpendicular...Ch. 5 - A man is running on a straight road that makes...Ch. 5 - In a frame at rest with respect to the billiard...Ch. 5 - In a frame at rest with respect to the billiard...Ch. 5 - In a frame S, two events are observed: event 1: a...Ch. 5 - If two spaceships are heading directly toward each...Ch. 5 - Two planets are on a collision course, heading...Ch. 5 - When a missile is shot from one spaceship toward...Ch. 5 - What is the relative velocity of two spaceships if...Ch. 5 - Prove that for any relative velocity v between two...Ch. 5 - Show that for any relative velocity v between two...Ch. 5 - A highway patrol officer uses a device that...Ch. 5 - Find the momentum of a helium nucleus having a...Ch. 5 - What is the momentum of an electron travelling at...Ch. 5 - (a) Find the momentum of a asteroid heading...Ch. 5 - (a) What is the momentum of a 2000-kg satellite...Ch. 5 - What is the velocity of an electron that has a...Ch. 5 - Find the velocity of a proton that has a momentum...Ch. 5 - What is the rest energy of an electron, given its...Ch. 5 - Find the rest energy in joules and MeV of a...Ch. 5 - If the rest energies of a proton and a neutron...Ch. 5 - The Big Bang that began the universe is estimated...Ch. 5 - A supernova explosion of a star produces of...Ch. 5 - (a) Using data from Potential Energy Of a...Ch. 5 - Using data from Potential Energy of a System...Ch. 5 - There is approximately of energy available from...Ch. 5 - A muon has a rest mass energy of 105.7 MeV, and it...Ch. 5 - A meson is a particle that decays into a muon and...Ch. 5 - (a) Calculate the relativistic kinetic energy of a...Ch. 5 - Alpha decay is nuclear decay in which a helium...Ch. 5 - (a) Beta decay is nuclear decay in which an...Ch. 5 - (a) At what relative velocity is (b) At what...Ch. 5 - (a) At what relative velocity is (b) At what...Ch. 5 - Unreasonable Results (a) Find the value of...Ch. 5 - (a) How long does it take the astronaut in Example...Ch. 5 - (a) How fast would an athlete need to be running...Ch. 5 - (a) Find the value of for the following situation....Ch. 5 - A clock in a spaceship tuns one-tenth the rate at...Ch. 5 - An astronaut has a heartbeat rate of 66 beats per...Ch. 5 - A spaceship (A) is moving at speed c/2 with to...Ch. 5 - Same two observers as in the preceding exercise,...Ch. 5 - Same two observers as in the preceding exercises....Ch. 5 - An observer at origin of inertial frame S sees a...Ch. 5 - An observer sees two events 1.5108s apart at a...Ch. 5 - An observer standing by the railroad tracks sees...Ch. 5 - Two astronomical events are observed from Earth to...Ch. 5 - Two astronomical events are observed to occur at a...Ch. 5 - A spacecraft starts from being at rest at the...Ch. 5 - (a) All but the closest galaxies are receding from...Ch. 5 - Suppose a spaceship heading straight toward the at...Ch. 5 - Repeat the preceding problem with the ship heading...Ch. 5 - If a spaceship is approaching the Earth at 0.100c...Ch. 5 - (a) Suppose the speed of light were only 3000 m/s....Ch. 5 - If a galaxy moving away from the Earth has a speed...Ch. 5 - A space probe speeding towards the nearest star...Ch. 5 - Near the center of our galaxy, hydrogen gas is...Ch. 5 - (a) Calculate the speed of a particle of dust that...Ch. 5 - (a) Calculate for a proton that has a momentum of...Ch. 5 - Show that the relativistic form of Newton’s second...Ch. 5 - A positron is an antimatter version of the...Ch. 5 - What is the kinetic energy in MeV of a meson that...Ch. 5 - Find the kinetic energy in MeV of a neutron with a...Ch. 5 - (a) Show that that at large velocities This means...Ch. 5 - One cosmic ray neuron has a velocity of 0.250c...Ch. 5 - What is for a proton having amass energy of 938.3...Ch. 5 - (a) What is the effective accelerating potential...Ch. 5 - (a) Using data from Potential Energy of a...Ch. 5 - (a) Calculate the energy released by the...Ch. 5 - A Van de Graaff accelerator utilizes a 50.0 MV...Ch. 5 - Suppose you use an average of 500 k W·h of...Ch. 5 - (a) A nuclear power plant converts energy from...Ch. 5 - Nuclear-powered rockets were researched for some...Ch. 5 - The sun energy at a rate of 3.85×10 26 W by the...Ch. 5 - Show that for a particle is invariant under...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Bacteria move back and f01th by using their flagella (Structures that look like little tails). Speeds of up to ...
College Physics
The proton is a composite particle composed of three quarks, all of which are either up quarks (u; charge +23e)...
Essential University Physics: Volume 2 (3rd Edition)
Suppose that you are holding a cup of coffee in your hand. Identify all forces on the cup and the reaction to e...
University Physics Volume 1
What class of motion, natural or violent, did Aristotle attribute to motion of the Moon?
Conceptual Physics (12th Edition)
TEST YOUR UNDERSTANDING OF SECTION 36.1 Can sound waves undergo diffraction around an edge?
University Physics with Modern Physics (14th Edition)
Compare the brightness of the two bulb with each other. (Pay attention to large differences in brightness. You ...
Tutorials in Introductory Physics
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
- Two astronomical events are observed to occur at a time of 0.30 s apart and a distance separation of 2.0109m from each other. How fast must a spacecraft travel from the site of one event toward the other to make the events occur at the same time when measured in the frame of reference of the spacecraft?arrow_forward(a) Wliat is the approximate velocity relative to us of a galaxy near the edge of the known universe, some 10 Gly away? (b) What fraction of the speed of light is this? Note that we have observed galaxies moving away from us at greater than 0.9c.arrow_forwardThe distance of a galaxy from our solar system is 10 Mpc. (a) What is the recessional velocity of the galaxy? (b) By what fraction is the starlight from this galaxy red shifted (that is, what is its z value)?arrow_forward
- On average, how far away are galaxies that are moving away from us at 2.0% of the speed of light?arrow_forwardSuppose the primed and laboratory observers want to measure the length of a rod that rests on the ground horizontally in the space between the helicopter and the tower (Fig. 39.8B). To derive the length transformation L = L (Eq. 39.5), we had to assume that the positions of the two ends were determined simultaneously. What happens to the length transformation equation if both observers measure the end below the helicopter at one time t1 and the other end at a later time t2?arrow_forward(a) What is the approximate speed relative to us of a galaxy near the edge of the known universe, some 10 Gly away? (b) What traction of the speed of light is this? Note that we have observed galaxies moving away from us at greater than 0.9c.arrow_forward
- . A compact neutron star has a mass of kg (about 1.4 times the mass of the Sun) but a radius of only m (approximately 6.2 mi!). If a clock on the surface of this exotic star marks the passage of 1 h of time, how much time is observed to pass on an identical clock located a very large distance from the neutron star?arrow_forwardIn December 2012, researchers announced the discovery of ultramassive black holes, with masses up to 40 billion times themass of the Sun (seen as the bright spot at the center of the galaxy near the center of Fig. P39.78). a. What is the Schwarz-schild radius of a black hole that has a mass 40 billion times that of the Sun? b. Suppose this black hole is 1.3 billion ly from theEarth. What is the angular radius of a galaxy that is 1.7 billion lybehind it, as viewed from the Earth? FIGURE P39.78arrow_forward(a) At what relative velocity is =2.00 ? (b) At what relative velocity is =10.0 ?arrow_forward
- You are driving on a freeway at a relativistic speed. Straight ahead of you, a technician standing on the ground turns on a searchlight and a beam of light moves exactly vertically upward, as seen by the technician. As you observe the beam of light, you measure the magnitude of the vertical component of its velocity as (a) equal to c, (b) greater than c, or (c) less than c. If the technician aims the searchlight directly at you instead of upward, you measure the magnitude of the horizontal component of its velocity as (d) equal to c, (e) greater than c, or (f) less than c.arrow_forwardThe nearest neutron star (a collated star made primarily of neutrons) is about 3.00 1018 m away from Earth. Given that the Milky Way galaxy (Fig. P1.81) is roughly a disk of diameter 1021 m and thickness 1019 m, estimate the number of neutron stars in the Milky Way to the nearest order of magnitude. Figure P1.81arrow_forwardThe New Horizons probe that passed by Pluto during July 2015 is one of the fastest spacecraft ever assembled. It was moving at about 14 km/s when it went by Pluto. If it maintained this speed, how long would it take New Horizons to reach the nearest star, Proxima Centauri, which is about 4.3 light-years away? (Note: It isn’t headed in that direction, but you can pretend that it is.)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStaxClassical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningFoundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author: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
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning