Question

Using 22 km/s/million light-years for Hubble’s constant, what recessional velocity do we expect to find if we observe a galaxy at 610 million light-years?

Answer 1

To find the expected recessional velocity of a galaxy 610 million light-years away using Hubble's constant of 22 km/s/million light-years, you multiply the constant by the distance, which equals 13420 km/s.

Step-by-step explanation:

The subject of this question is Physics, specifically concerning Hubble's Law which is used to determine the recessional velocity of galaxies based on their distance from Earth. To calculate the expected recessional velocity of a galaxy that is 610 million light-years away using Hubble's constant, follow these steps:

• First, understand that Hubble's constant (H) is given as 22 km/s/million light-years.
• Next, multiply the value of H by the distance to find the recessional velocity. The calculation will be (22 km/s/million light-years) × (610 million light-years).
• Performing this calculation yields: 13420 km/s as the expected recessional velocity for the galaxy.