Author Question: All the following statements are true. Which one follows directly from Kepler's third law ? A) ... (Read 45 times)

newbem · **on:** Jul 27, 2018

All the following statements are true. Which one follows directly from Kepler's third law ?

A) Venus takes longer to rotate than it does to orbit the Sun.
B) Venus has a thicker atmosphere than Mercury.
C) Venus orbits the Sun at a slower average speed than Mercury.
D) Venus is more massive than Mercury.

Question 2

The Sun's observed spectrum is

A) a continuum with no lines, as shown by the rainbow.
B) only emission lines on a black background.
C) only absorption lines on a black background.
D) a continuum with absorption lines.
E) a continuum with emission lines.