If you found a galaxy with an H$\alpha$ emission line that had a wavelength of 756.3 nm,what would be the galaxy's distance if the Hubble constant is 22 km/s/Mly? Note that the rest wavelength of the H$\alpha$ emission line is 656.3 nm.
A) 1,120 km/s
B) 2,080 km/s
C) 6,070 km/s
D) 8,500 km/s

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The Answer of If you found a galaxy with an H$\alpha$ emission line that had a wavelength of 756.3 nm,what would be the galaxy's distance if the Hubble constant is 22 km/s/Mly? Note that the rest wavelength of the H$\alpha$ emission line is 656.3 nm.
A) 1,120 km/s
B) 2,080 km/s
C) 6,070 km/s
D) 8,500 km/s

If You Found a Galaxy with an H α\alphaα Emission Line That Had a Wavelength of 756

If You Found a Galaxy with an H $\alpha$ Emission Line That Had a Wavelength of 756