If a galaxy has a radial velocity of 8000 km/s and the Hubble constant is 70 km/s/Mpc, what is the distance to this galaxy
A)$8.75 × 10^3$ Mpc
B)$2.4 × 10^9$ Mpc
C)$5.6 × 10^5$ Mpc
D)114 Mpc
E)$8.75 × 10^{-3}$ Mpc

Question

Quizplus · Accepted Answer

The distance to the galaxy can be calculated using the formula $d = \frac{v}{H}$, where $d$ is the distance in megaparsecs (Mpc), $v$ is the radial velocity (8000 km/s), and $H$ is the Hubble constant (70 km/s/Mpc). Plugging in the values, we get $d = \frac{8000}{70} = 114$ Mpc.

If a Galaxy Has a Radial Velocity of 8000 Km/s 8.75×1038.75 × 10^38.75×103

If a Galaxy Has a Radial Velocity of 8000 Km/s $8.75 × 10^3$