[5] A line in a star's spectrum lies at 400.0 nm . In the laboratory, that same line lies at 400.2 nm . How fast is this star moving? Is it moving towards or away from us? Note: be sure to always use the formula sheet.
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- Wavelength in the star's spectrum (\(\lambda_{\text{observed}}\)) = 400.0 nm - Wavelength in the laboratory (\(\lambda_{\text{rest}}\)) = 400.2 nm Show more…
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