Homework Assignment #7

Name:

Section number

Date Due: Oct. 27

1. What factor makes it relatively easy to find the masses of all of the Jovian planets?

2. From its average density (2.1 g/cm3), what can be inferred about the probable composition of Pluto? Given Pluto's small size, what other solar system bodies does it most nearly resemble?

3. In general, what does the observed density of impact cratering suggest about a body's evolution and age?

4. Using the modified version of Kepler's Third Law, calculate Jupiter's mass from the orbital radius and period of one of its Galilean satellites.

5. Jupiter's Great Red Spot rotates in 6 days and has a circumference equivalent to a circle with a radius of 10,000 km. Calculate the wind speed at the outer edge of the Spot (in km/s).

6. Saturn's rings extend from 75,000 to 137,000 km from the center of the planet. Use the modified version of Kepler's Third Law to find the difference in orbital periods between the inner and outer edges of the rings.