If H (the Hubble constant)equals 70 km/sec/Mpc,then approximately how far away is a galaxy with a radial velocity of 2100 km/sec?
A)30 Mpc
B)2030 Mpc
C)2170 Mpc
D)147,000 Mpc

Question

Quizplus · Accepted Answer

The distance to the galaxy can be calculated using Hubble's Law: velocity = Hubble constant × distance. Rearranging gives distance = velocity / Hubble constant. So, 2100 km/sec divided by 70 km/sec/Mpc equals 30 Mpc.

If H (The Hubble Constant)equals 70 Km/sec/Mpc,then Approximately How Far