The Cosmic Perspective
The Cosmic Perspective
7th Edition
ISBN: 9780321839558
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: Addison-Wesley
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Chapter 1, Problem 34EAP

Thinking About Scale. One key to success in science is finding simple ways to evaluate new ideas, and making a simple scale model is often helpful. Suppose someone tells you that the reason it is warmer during the day than at night is that the day side of Earth is closer to the Sun than the night side. Evaluate this idea by thinking about the size of Earth and its distance from the Sun in a scale model of the solar system.

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The mass of the Earth is about 6 x 1021 metric tons, and the mass of the Sun is about 2 x 1027 metric tons.  About how many times more is the mass of the sun compared to the mass of the Earth? Put the numbers into Scientific Notation.  Do your calculations using the product or quotient rule.  Then write your answer as a Standard Number.  What is the proper name of the answer?
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The Cosmic Perspective

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