Physical Universe
16th Edition
ISBN: 9781259664991
Author: KRAUSKOPF
Publisher: MCG
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Question
Chapter 19, Problem 38MC
To determine
The least possible future for the universe.
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Check out a sample textbook solutionStudents have asked these similar questions
1. Which of these is true about the Big Bang model?
a. The singularity is an established, well-defined part of the model.
b. Cosmic expansion stopped at some point in time.
c. Part of its proof is the amounts of H and He we have in the universe today.
d. The Big Bang was a big explosion that threw matter into many different directions
How big is the universe
What possible evidence do we have for the existence of "dark energy"?
a. It blocks our view of distant parts of the universe
b. The universe contains more light than has ever been emitted by stars.
c. Expansion seems to be accelerating
d. We see the cosmic background radiation in all directions
e. All of the above
Chapter 19 Solutions
Physical Universe
Ch. 19 - Prob. 1MCCh. 19 - Prob. 2MCCh. 19 - Prob. 3MCCh. 19 - Prob. 4MCCh. 19 - Prob. 5MCCh. 19 - Prob. 6MCCh. 19 - Prob. 7MCCh. 19 - Prob. 8MCCh. 19 - Prob. 9MCCh. 19 - Prob. 10MC
Ch. 19 - Prob. 11MCCh. 19 - Prob. 12MCCh. 19 - Prob. 13MCCh. 19 - Prob. 14MCCh. 19 - Prob. 15MCCh. 19 - Prob. 16MCCh. 19 - Prob. 17MCCh. 19 - Prob. 18MCCh. 19 - Prob. 19MCCh. 19 - Prob. 20MCCh. 19 - Prob. 21MCCh. 19 - Prob. 22MCCh. 19 - Prob. 23MCCh. 19 - Prob. 24MCCh. 19 - Prob. 25MCCh. 19 - Current ideas suggest that what is responsible for...Ch. 19 - Prob. 27MCCh. 19 - Prob. 28MCCh. 19 - The expansion of the universe apparently a. has...Ch. 19 - Prob. 30MCCh. 19 - The elements heavier than hydrogen and helium of...Ch. 19 - Prob. 32MCCh. 19 - Prob. 33MCCh. 19 - Prob. 34MCCh. 19 - Prob. 35MCCh. 19 - Prob. 36MCCh. 19 - Prob. 37MCCh. 19 - Prob. 38MCCh. 19 - Prob. 39MCCh. 19 - Prob. 40MCCh. 19 - It is likely that the planets, satellites, and...Ch. 19 - Prob. 42MCCh. 19 - Prob. 43MCCh. 19 - Prob. 1ECh. 19 - Prob. 2ECh. 19 - Prob. 3ECh. 19 - The earth undergoes four major motions through...Ch. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - Prob. 7ECh. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Prob. 14ECh. 19 - Prob. 15ECh. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - There is no day-night difference in cosmic-ray...Ch. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - What is the observational evidence in favor of the...Ch. 19 - Prob. 32ECh. 19 - Prob. 33ECh. 19 - To what event in the history of the universe can...Ch. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Prob. 38ECh. 19 - Prob. 39ECh. 19 - Prob. 40ECh. 19 - Prob. 41ECh. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - Prob. 44ECh. 19 - Prob. 45E
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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
- What is the evidence that the Universe was very uniform during its first 400,000 years?arrow_forwardWhy are measurements of the present density of the Universe important?arrow_forwardDescribe at least two characteristics of the universe that are explained by the standard Big Bang model.arrow_forward
- Describe some possible futures for the universe that scientists have come up with. What property of the universe determines which of these possibilities is the correct one?arrow_forwardGalaxies are found in the “walls” of huge voids; very few galaxies are found in the voids themselves. The text says that the structure of filaments and voids has been present in the universe since shortly after the expansion began 13.8 billion years ago. In science, we always have to check to see whether some conclusion is contradicted by any other information we have. In this case, we can ask whether the voids would have filled up with galaxies in roughly 14 billion years. Observations show that in addition to the motion associated with the expansion of the universe, the galaxies in the walls of the voids are moving in random directions at typical speeds of 300 km/s. At least some of them will be moving into the voids. How far into the void will a galaxy move in 14 billion years? Is it a reasonable hypothesis that the voids have existed for 14 billion years?arrow_forwardThe Universe is approximately 13.8 Billion years old. What is the volume of the visible universe in m3?arrow_forward
- 18. What is the name of the period in the Early Universe during which the Universe expanded very rapidly as a quantum system? a. Inflation. b. Cosmic Microwave Background. c. Gravitational Collapse. d. Big Bang Nucleosynthesis.arrow_forward1. What is formed when there is a fusion of two deuterium nuclei in big bang nucleosynthesis? 2. What are the conditions in the universe so that a nuclear fusion could occur? 3. What is formed when there is fusion of deuterium and tritium? 4. What was formed as the universe expanded and cooled down?arrow_forwardSuppose a hypothetical universe is expanding (at some moment in time) at a rate of H. At this same moment the density of this Universe is ρ. (a) Confirm for yourself that this is a closed universe, given the values below. (b) Determine, and enter below, the spatial radius of curvature for this closed universe (at the same moment in time at which the values above are given). Values: H = 56 km s-1 Mpc-1 ρ = 4.9x10-25 kg m-3 Give your answer for (b) in units of Mpc, to the nearest integer (not in scientific notation - e.g., 1234).arrow_forward
- 5. Cesar reads about the big bang theory, which explains that the universe expanded as theresult of an explosion. He wants to evaluate whether this theory is a good one. Whichstatement is a characteristic of a good theory? A. It is the idea of only one scientist.B. It does not change as time passes.C. It is not supported by scientific evidence.D. It changes with new observations made by astronomers.arrow_forwardWhich statement below does not fit the model of the big bang and the subsequent changes in the universe? A) the universe was denser previously than it is now. B) the universe was hotter previously than it is now . C) the galaxies are moving closer together as time progresses. D) the universe is continuing to expand, even after the big bang.arrow_forward
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