Two asteroids, of the same mass, have a gravitational potential ...

[tth]

Two asteroids, of the same mass, have a gravitational potential energy U.
 
  If a third asteroid, of the same mass, moves toward them, to a position such that the distances between the three asteroids are the same, the gravitational potential energy of the system will have changed by A) 4U.
  B) 2U.
  C) 3U.
  D) U.
  E) 5U.

Question 2

When Mercury or Venus passes in front of the disk of the Sun, we call this
 
  A) an eclipse
  B) a shadow event
  C) a transit
  D) an occultation

[patma1981]

Answer to Question 1

B

Answer to Question 2

C

[tth]

Gracias!

[bassamabas]

Excellent