Cosmic Perspective Fundamentals
Cosmic Perspective Fundamentals
3rd Edition
ISBN: 9780134988504
Author: Bennett, Jeffrey O., Donahue, M. (megan), SCHNEIDER, Nicholas, Voit, Mark
Publisher: Pearson,
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Chapter 4, Problem 10QQ

Choose the best answer to each of the following. Explain your reasoning.

Which of the following discoveries provides strong evidence in favor of the nebular theory? (a) Planets are common around other stars. (b) The universe is expanding. (c) Mars once had conditions that may have allowed for life.

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Think of our Milky Way Galaxy as a flat circular disk of diameter 100,000 light-years. Suppose we are one of 1000 civilizations, randomly distributed through the disk, interested in communicating via radio waves. How far away in light years would the nearest such civilization be from us on average? Show your working. (Hint: Begin by calculating the area of the disk. Find the area of one of a 1,000 squares. Consider the separation of the centres of two adjacent squares.)
Please answer the questions correlty and please answer all the questions with what it regards in saying exactly, please and thank you take your time. Ive read the guide lines and honor code that i can have up to Submit only one question at a time under the appropriate subject. A question can have up to 3 subparts (i.e. part a, b, and c). If you dont belive me here is the link of barthleby saying exactly that thanks: https://bartleby.zendesk.com/hc/en-us/articles/360017462394-How-can-I-ensure-my-questions-get-answered-as-quickly-as-possible- Convert light-minutes to km by following the steps described below1.A)What is the speed of light (300,000,000 m/s) in km/s? Note that 1 km = 1000 m.B)Use your answer to the previous question to find the distance traveled by light in one minute. Give your answer in millions of km. (Note that 1 million = 106).
Please answer the questions correlty and please answer all the questions with what it regards in saying exactly, please and thank you take your time. Ive read the guide lines and honor code that i can have up to Submit only one question at a time under the appropriate subject. A question can have up to 3 subparts (i.e. part a, b, and c). If you dont belive me here is the link of barthleby saying exactly that thanks: https://bartleby.zendesk.com/hc/en-us/articles/360017462394-How-can-I-ensure-my-questions-get-answered-as-quickly-as-possible-
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