Cosmic Perspective Fundamentals
3rd Edition
ISBN: 9780134988504
Author: Bennett, Jeffrey O., Donahue, M. (megan), SCHNEIDER, Nicholas, Voit, Mark
Publisher: Pearson,
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Textbook Question
Chapter 4, Problem 2QQ
Choose the best answer to each of the following. Explain your reasoning.
Planetary orbits are (a) very eccentric (stretched-out) ellipses and in the same plane. (b) fairly circular and in the same plane. (c) fairly circular but oriented in random directions.
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As discussed in class, the moon is receding from the Earth due to tides at a rate of ~4 cm/year. Let’s assume that rate has been constant throughout time (it wasn’t, but we can use it to illustrate some key points). Its current semi-major axis is 384,400 km.a) If the moon formed 4.5 billion years ago and has been receding from the Earth ever since, what was its original semi-major axis? What was its original orbital period?b) What would the apparent size of the Moon have been in the sky as viewed from Earth? That is, in Hmwk 2, you were told the diameter of the Moon spans about 0.5o when viewed from Earth today. What would it have been when the Moon first formed?
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Relevant Numbers1 AU = 150,000,000 km = 1.5x108 kmEccentricity of Earth’s Orbit: 0.0167Radius of Earth: 6371 kmMass of Earth: 5.96x1024 kgRadius of the Moon: 1737 kmMass of Moon: 7.34x1022 kgRadius of Mars: 3390 kmMass of Mars: 6.4x1023 kgRadius of the Sun: R⦿=696,300 kmMass of the Sun: M⦿=2x1030…
For the following questions, THERE IS NO NEED FOR EXPLANATION. PLEASE PROVIDE JUST THE ANSWER THANK YOU. Please DO NOT waste time on writing things to explain. Please answer in 30 mintues or else I will write a bad review. If you follow my rules and answer in less than 30 mintues then I will write a very long and wonderful review about you. ANSWER the questions correlty and please answer all the questions with what it regards in saying exactly.
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-
Chapter 4 Solutions
Cosmic Perspective Fundamentals
Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....
Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Choose the best answer to each of the following....Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...Ch. 4 - Explain all answers clearly, with complete...
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- For the following questions, THERE IS NO NEED FOR EXPLANATION. PLEASE PROVIDE JUST THE ANSWER THANK YOU. Please DO NOT waste time on writing things to explain. Please answer in 30 mintues or else I will write a bad review. If you follow my rules and answer in less than 30 mintues then I will write a very long and wonderful review about you. ANSWER the questions correlty and please answer all the questions with what it regards in saying exactly. 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-arrow_forwardState the definition for a parsec, and derive its value in terms of As- tronomical Units. Convert your answer for the value of the distance of a parsec in Astronomical Units into light years. Be sure to include a large and clearly labeled diagram showing how you arrived at your conclusions. Be sure to show all work!arrow_forwardPlease solve both sub-parts please please solve accurate and exact answer. Fastarrow_forward
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- Thinking Mathematically: Explore the quantitative dependencies of the acceleration upon the speed and the radius of curvature. Then answer the following questions. Choose the right answer in the parenthesis. 1. As the radius of the circle is doubled, the acceleration is (one-fourth, one-half, two times, four times) the original value. 2. As the radius of the circle is tripled, the acceleration is (one-third, one-ninth, three times, nine times) the original value. 3. If your pig were made to fly at the same speed but in a circular path with a smaller radius, the tension in the string would be (less, more). 4. If your pig were made to fly at the same speed but in a circular path with a smaller radius, the centripetal force on the pig would be (more, less).arrow_forwardDrag the moon to various locations in order to determine the quantitative effect of distance upon the gravitational force. Examine the effect of doubling, tripling and quadrupling the distance of separation (as measured from planet'scenter). Consider the planet'ssurface to be a distance of one Earth-radius (1 Rplanet). Use the table at the right to record data for whole-number multiples of Rplanet.Use your data to complete the following sentences.If the separation distancebetween the moonand the planetis ... a. ... increased by a factor of 2, then the Fgravis ______________ by a factor of _______.b. ... increased by a factor of 3, then the Fgravis ______________ by a factor of _______.c. ... increased by a factor of 4, then the Fgravis ______________ by a factor of _______arrow_forwardThe table below presents the semi-major axis (a) and Actual orbital period for all of the major planets in the solar system. Cube for each planet the semi-major axis in Astronomical Units. Then take the square root of this number to get the Calculated orbital period of each planet. Fill in the final row of data for each planet. Table of Data for Kepler’s Third Law: Table of Data for Kepler’s Third Law: Planet aau = Semi-Major Axis (AU) Actual Planet Calculated Planet Period (Yr) Period (Yr) __________ ______________________ ___________ ________________ Mercury 0.39 0.24 Venus 0.72 0.62 Earth 1.00 1.00 Mars 1.52 1.88 Jupiter…arrow_forward
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