The H? line has a wavelength of 410.2 nm when observed in the laboratory. If the H? line appears in a stars spectrum at 410.0 nm, what is the radial velocity of the star?
a. 146 km/s away from the observer
b. 146 km/s toward the observer
c. 6.0 × 10^7 m/s away from the observer
d. 6.0 × 10^7 m/s toward the observer
e. The radial velocity of the star cannot be determined from this information.
b
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