The reddish particles in Jupiter's ring are less than 1 percent as reflective as Saturn's whiter particles. Saturn's ring particles are thought to be ____while Jupiters are thought to be ______
a. icy; rocky
b. rocky; icy
c. icy; also icy
d. rock; also rock
A
Physics & Space Science
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The gravitational attraction of the sun for earth is _____ that of earth for the sun.
a. greater than b. the same as c. smaller than
Physics & Space Science
A 15-?F capacitor is charged to 40 V and then connected across an initially uncharged 25-?F capacitor. What is the final potential difference across the 25-?F capacitor?
A. 12 V B. 18 V C. 15 V D. 21 V E. 24 V
Physics & Space Science
How is the "Fermi Paradox" normally stated?
A) Why are we here? B) Who are we? C) Where are we? D) Where is everybody?
Physics & Space Science
AM radio stations have greater range than FM stations because
a. AM is more efficient than FM. b. they have more powerful transmitters. c. their lower frequency radio waves reflect off the ionosphere. d. none of the above
Physics & Space Science