The hydrogen Balmer line H g has a wavelength of 434.0 nm in the laboratory. It is observed in a quasar at 651.0 nm. In terms of the speed of light, what is the recessional velocity of this quasar?
A) 217.0
B) 2
C) 1.5
D) 0.67
E) 0.5
Correct Answer:
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