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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
Hydrogen gas emits a strong spectral line of red light with a wavelength of 656.3 nm (the Balmer  line).  This emission line is seen in the spectrum of a distant quasar, but at a wavelength of 721.9 nm.  Applying Doppler's relationship, how fast is this object moving with respect to the Earth, in terms of the velocity of light, c?
   A)  1/10 c    B)  1.1 c    C)  1/100 c    D)  10 c
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Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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7 years ago Edited: 2 years ago, bio_man
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staedtler Author
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#2
7 years ago
On behalf of my study group and I, thank you
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4 years ago
THanks
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