Essential Cosmic Perspective Plus Mastering Astronomy with Pearson  eText, The -- Access Card Package (8th Edition) (Bennett Science & Math Titles)
Essential Cosmic Perspective Plus Mastering Astronomy with Pearson eText, The -- Access Card Package (8th Edition) (Bennett Science & Math Titles)
8th Edition
ISBN: 9780134516332
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 9, Problem 21EAP

In another solar system, astror1omers discover an object the size of Earth orbiting its star at the distance of the Kuiper belt.

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In recent years, astronomers have found planets orbiting nearby stars that are quite different from the planetsin our solar system. Kepler-12b has a diameter that is 1.7 times the diameter of Jupiter and has only 0.43 timesthe mass of Jupiter. Calculate the value of the acceleration due to gravity g at the surface of this large, lowdensity world?(See Table of Astronomical Information on the inside back cover of the text)
In the effort to discover exoplanets a planet around another star was discovered that has a period of 320days. What is the distance of the planet from its star if we assume that this star has the same mass as the Sun?
The orbital velocity for a sattelite orbiting  earth at it's radius is 8 km/s. What would be the orbital velocity around a planet that was 2 times as massive as earth but 1/2 the size?

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Essential Cosmic Perspective Plus Mastering Astronomy with Pearson eText, The -- Access Card Package (8th Edition) (Bennett Science & Math Titles)

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