Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 14, Problem 3RQ
To determine
To explain why open and closed universe has no center.
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The visible section of the Universe is a sphere centered on the bridge of your nose, with radius 13.7 billion light-years. (a) Explain why the visible Universe is getting larger, with its radius increasing by one light-year in every year. (b) Find the rate at which the volume of the visible section of the Universe is increasing.
Assume that the universe is expanding at an increasing rate, and explain why.
Why are measurements of the present density of the universe important?
Chapter 14 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 14 - How does the darkness of the night sky tell you...Ch. 14 - How can Earth be located at the center of the...Ch. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Why couldn’t atomic nuclei exist when the e of the...Ch. 14 - Why are measurements of the present density of the...Ch. 14 - Prob. 7RQCh. 14 - Prob. 8RQCh. 14 - What is the evidence that the Universe was very...Ch. 14 - Prob. 10RQ
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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
- Why cant an open universe have a center? How can a closed universe not have a center?arrow_forwardWhat is the fate of a closed universe? In what case would that not be true?arrow_forwardExplain what we mean when we call the universe homogeneous and isotropic. Would you say that the distribution of elephants on Earth is homogeneous and isotropic? Why?arrow_forward
- Some theorists expected that observations would show that the density of matter in the universe is just equal to the critical density. Do the current observations support this hypothesis?arrow_forwardDescribe at least two characteristics of the universe that are explained by the standard Big Bang model.arrow_forwardWhat is the difference between hot dark matter and cold dark matter? How does this difference affect cosmology?arrow_forward
- What evidence shows that the universe is flat?arrow_forwardWhy do Weinberg and other scientists seriously consider the possibility that the Standard Model is just a tentative explanation for the composition of the universe?arrow_forwardExplain why it only appears that we are at the center of expansion of the universe and why an observer in another galaxywould see the same relative motion of all but the closest galaxies away from herarrow_forward
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