Because t he Hubble constant has a value of 70 km/s/Mpc, a galaxy 100 Mpc away would have a recession velocity of ____.
A) 0.7 km/s
B) 1.43 km/s
C) 30 km/s
D) 170 km/s
E) 7,000 km/s

Question

Quizplus · Accepted Answer

The Hubble Law states that the recession velocity of a galaxy is directly proportional to its distance from us. The formula is $v = H_0 \times d$, where $v$ is the recession velocity, $H_0$ is the Hubble constant (70 km/s/Mpc in this case), and $d$ is the distance in megaparsecs (Mpc). Plugging in the given values: $v = 70 \, \text{km/s/Mpc} \times 100 \, \text{Mpc} = 7,000 \, \text{km/s}$.

Because T He Hubble Constant Has a Value of 70