Which of the galactic rotation curves in the figure below is closest to what is actually measured for galaxies?
A) 1
B) 2
C) 3
D) 4
E) 4 for ellipticals, 2 for spirals

Question

Which of the galactic rotation curves in the figure below is closest to what is actually measured for galaxies? 
A) 1 
B) 2 
C) 3 
D) 4 
E) 4 for ellipticals, 2 for spirals

Quizplus · Accepted Answer

The Answer of Which of the galactic rotation curves in the figure below is closest to what is actually measured for galaxies? 
A) 1 
B) 2 
C) 3 
D) 4 
E) 4 for ellipticals, 2 for spirals

Which of the Galactic Rotation Curves in the Figure Below