The Cosmic Perspective Fundamentals (2nd Edition)
The Cosmic Perspective Fundamentals (2nd Edition)
2nd Edition
ISBN: 9780133889567
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 2, Problem 7QQ

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

One week after full moon, the Moon’s phase is (a) first quarter: (b) third quarter. (c) new.

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Show your complete, clear and detailed solution. Please explain also how did you get your answer. Thank you.
Problem 2. Planetary Body Composition:  Density (Links to an external site.) of the Earth  (Palen, et. al., 1st Edition,  Chapter 6, problem 70) Earth’s mean (Links to an external site.) radius is 6,378 km and its mass is 5.97 x 1024 kg. CALCULATE Earth’s average (Links to an external site.) density. SHOW YOUR WORK. DO NOT LOOK UP THIS VALUE! The average density of Earth’s crust is 2,600 kg/m3. What does this tell you about Earth’s interior?
Can please solve question 4 and 5 explaining step by step on a picture please, thanks. all the information it's on the first picture. where Uk= 1/2K((x2)^2-(x1)^2)) and Ug= mg(x2-x1) and K is the slope and in this case is 7.99 N/m. I think this is enough information to solve this thank you. Just post the picute of all the step you did to solve it.
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