EBK THE COSMIC PERSPECTIVE
9th Edition
ISBN: 9780135161753
Author: Voit
Publisher: VST
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 20, Problem 55EAP
Extremely Distant Galaxies. The most distant galaxies observed to date have a redshift of approximately
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
E2
An astronomer observed the motions of some galaxies. Based on his observations, he made the following statements. Which one of them is most likely to be false? Take Hubble's constant to be 67 km/s/Mpc.
A. A galaxy observed to be moving away from us at a speed of 70 km/s is at a distance of about 1 Mpc from us.
B. A galaxy observed to be moving away from us at a speed of 700 km/s is at a distance of about 10 Mpc from us.
C. A galaxy observed to be moving away from us at a speed of 7000 km/s is at a distance of about 100 Mpc from us.
D. A galaxy observed to be moving away from us at a speed of 70000 km/s is at a distance of about 1 Gpc from us.
Is the answer D? Thank you!
The matter density in the Universe today
is Pm = -27 kg m-3. What would
2.7 x 10
be the value of the density parameter,
2o, if the Hubble constant had the value
Ho = 38 km/s/Mpc? Assume the Universe
does not contain dark energy and choose
the option below that best matches your
answer.
Select one:
O a.
0.1
O b. 2.
О с.
1.
O d. 0.7
О е.
0.5
Chapter 20 Solutions
EBK THE COSMIC PERSPECTIVE
Ch. 20 - Prob. 1VSCCh. 20 - Prob. 2VSCCh. 20 - Prob. 3VSCCh. 20 - Prob. 4VSCCh. 20 - Use the following questions to check your...Ch. 20 - Prob. 6VSCCh. 20 - Why do we need to understand the evolution of the...Ch. 20 - Prob. 2EAPCh. 20 - Prob. 3EAPCh. 20 - Prob. 4EAP
Ch. 20 - Prob. 9EAPCh. 20 - Prob. 10EAPCh. 20 - Prob. 11EAPCh. 20 - Prob. 12EAPCh. 20 - Prob. 13EAPCh. 20 - What is the cosmological horizon, and what...Ch. 20 - Prob. 15EAPCh. 20 - Prob. 16EAPCh. 20 - Prob. 17EAPCh. 20 - Prob. 18EAPCh. 20 - Prob. 19EAPCh. 20 - Decide whether the statement makes sense (or is...Ch. 20 - Prob. 21EAPCh. 20 - Prob. 22EAPCh. 20 - Prob. 23EAPCh. 20 - Prob. 24EAPCh. 20 - Prob. 25EAPCh. 20 - Choose the best answer to each of the following....Ch. 20 - Prob. 27EAPCh. 20 - Choose the best answer to each of the following....Ch. 20 - Prob. 29EAPCh. 20 - Prob. 30EAPCh. 20 - Prob. 31EAPCh. 20 - Choose the best answer to each of the following....Ch. 20 - Choose the best answer to each of the following....Ch. 20 - Choose the best answer to each of the following....Ch. 20 - Prob. 35EAPCh. 20 - Prob. 38EAPCh. 20 - Prob. 41EAPCh. 20 - Prob. 42EAPCh. 20 - Prob. 43EAPCh. 20 - Prob. 45EAPCh. 20 - Prob. 46EAPCh. 20 - Prob. 47EAPCh. 20 - Prob. 48EAPCh. 20 - Prob. 51EAPCh. 20 - Prob. 52EAPCh. 20 - Prob. 53EAPCh. 20 - Prob. 54EAPCh. 20 - Extremely Distant Galaxies. The most distant...Ch. 20 - Stretching of the Universe. The most distant white...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The magnitude of force of gravity.
Physics (5th Edition)
Using the definitions in Eqs. 1.1 and 1.4, and appropriate diagrams, show that the dot product and cross produc...
Introduction to Electrodynamics
Monochromatic light from a distant point source is incident on two slits. The resulting graph of intensity vers...
Tutorials in Introductory Physics
A device for training astronauts and jet fighter pilots is designed to rotate the trainee in a horizontal circl...
Physics for Scientists and Engineers with Modern Physics
Is Earths inner core solid and the outer core liquid because the inner core is cooler than the outer core? Expl...
Conceptual Integrated Science
Separate the list P,F,V,,T,a,m,L,t, and V into intensive properties, extensive properties, and nonproperties.
EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
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
- B6arrow_forwardThe Andromeda Galaxy, M31, is the closest large spiral Galaxy to our Milky Way. When we lookat its chemical spectrum, we see that it's hydrogen alpha emission line has an observed wavelength of 655nm. a. Calculate z, being careful with the sign b. How fast is it moving in km/s c. Is it redshifted or blueshifted? Is it moving toward or away from us?arrow_forward10arrow_forward
- The hydrogen Balmer line Hγ has a wavelength of 434.0 nm in the laboratory. If a quasar has a redshift of z = 2, what would you measure the wavelength of this spectrum line to be? a. 868.0 nm b. 434.0 nm c. 343.0 nm d. 1302 nm e. 217.0 nmarrow_forwardThe redshift measurements of spectra from magnesium and iron are important in understanding distant galaxies. What are the Kα and Lα wavelengths for magnesium and iron?arrow_forward11. Bob is traveling in a space ship and observes emission from a cloud of atomic hydrogen gas a few light years away. He identifies the Balmer-beta emission line (from the n = 4 to n = 2 transition) and measures its wavelength to be 322 nm. How fast is Bob moving relative to the cloud of hydrogen? Is he getting closer or further away from the hydrogen cloud? (You may assume that Bob is moving directly toward or away from the hydrogen gas cloud. Recall that the ground state energy of hydrogen is -13.6 eV.)arrow_forward
- We see light from a distant galaxy, galaxy “A”, with a redshift of z = 0.017. What wavelengths would we observe from the Hydrogen atom transitions from n = 5 to n = 2, from n = 4 to n = 2, and from n = 3 to n = 2?arrow_forwardDoes Hubble's Law work well for galaxies in the Local Group (such as Andromeda)? No, because dark energy is accelerating the universe's expansion over those distances. No, because we do not know the precise value of Ho. No, because Hubble did not know the Local Group existed when he discovered his law. Yes, it works well for all galaxies. No, because galaxies in the Local Group are bound gravitationally together.arrow_forwardCosmic Microwave Background 8. The Cosmic Microwave Background (CMB) acts as a perfect black body whose energy spectrum(energy density per unit volume per unit frequency) is given by the expression : (image attached)arrow_forward
- 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 ?arrow_forwardThe spectral lines of various elements are detected in light from a galaxy in the constellation Ursa Major. An ultraviolet line from singly ionized calcium (lS = 393 nm) is observed at wavelength l0 = 414 nm, redshifted into the visible portion of the spectrum. At what speed is this galaxy receding from us?arrow_forwardHow did they get 0 and then 1250nm for the answers? Trying to study for a quiz can you guys help pleasearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStaxAstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStaxPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Time Dilation - Einstein's Theory Of Relativity Explained!; Author: Science ABC;https://www.youtube.com/watch?v=yuD34tEpRFw;License: Standard YouTube License, CC-BY