Physics, 11.02.2020 01:55 autumnguidry7628

Measurement of the H line in the spectrum of the halo star HD 19445 reveals a wavelength of 656.586 nm compared to the rest wavelength of 656.281 nm. What is the radial velocity of HD 19445 in km/s? (answer down to one decimal place and include your +/- sign; do NOT include the units in your answer

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Measurement of the H line in the spectrum of the halo star HD 19445 reveals a wavelength of 656.586...