Multiple Choice
You observe two galaxy clusters, cluster A and cluster B.Both have the same radius, but cluster B's outer galaxies are orbiting the cluster with circular velocities that are twice that of cluster A's circular velocities.The mass of cluster B is
A) 2 times cluster A's mass
B) 4 times cluster A's mass.
C) half of cluster A's mass.
D) one-quarter of cluster A's mass.
E) equal to cluster A's mass.
Correct Answer:
Verified
Correct Answer:
Verified
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