Imagine that you have obtained spectra for several galaxies and have measured the observed wavelength of a hydrogen emission line that has a rest wavelength of 656.3 nanometers. here are your results: galaxy 1: observed wavelength of hydrogen line is 660.0 nanometers. galaxy 2: observed wavelength of hydrogen line is 665.8 nanometers. galaxy 3: observed wavelength of hydrogen line is 682.7 nanometers. calculate the redshift, z, for each of these galaxies.
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A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped
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The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.
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Imagine that you have obtained spectra for several galaxies and have measured the observed wavelengt...
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