Explorations: Introduction to Astronomy (Arny), 6th Edition

Chapter 8: Survey of Solar Systems

Problems

1
Calculate the densities of Venus and Jupiter, given the following data: The mass and radius of Venus are 4.87 x 1027 grams and 6051 kilometers, respectively. The mass and radius of Jupiter are about 1.9 x 1030 grams and 71,492 kilometers, respectively. How do these numbers compare with the density of rock (about 3 grams per cm3) and water (1 gram per cm3)? (Note: Be sure to convert kilometers to centimeters if you are expressing your answer in grams per cm3.)
2
Look up the mass and radius of Mercury and Jupiter and calculate their escape velocity, using the expression in chapter 2. Does this help you see why the one body has an atmosphere but the other doesn't? (Note: Be sure to convert kilometers to meters or the appropriate unit.)
3
At what distance beyond Pluto does Bode's law predict the next planet should be?
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