Why is Neptune denser than Saturn? A) It has a different ...

[urbanoutfitters]

Why is Neptune denser than Saturn?
 
  A) It has a different composition than Saturn, including a higher proportion of hydrogen compounds and rocks.
  B) It has a greater proportion of hydrogen than Saturn.
  C) The extra mass of Neptune compresses its interior to a greater extent than that of Saturn.
  D) Its hydrogen is molecular, whereas Saturn's hydrogen is atomic.
  E) It is not denser than Saturn.

Question 2

If the distance between us and a star is doubled, with everything else remaining the same, the luminosity
 
  A) is decreased by a factor of four, and the apparent brightness is decreased by a factor of four.
  B) is decreased by a factor of two, and the apparent brightness is decreased by a factor of two.
  C) remains the same, but the apparent brightness is decreased by a factor of two.
  D) remains the same, but the apparent brightness is decreased by a factor of four.
  E) is decreased by a factor of four, but the apparent brightness remains the same.

[Cheesycrackers]

Answer to Question 1

A

Answer to Question 2

D

[urbanoutfitters]

Excellent

[EAN94]

Gracias!