Find the speed for a star in which this line appears at wavelength 121.1 nmnm.. Express your answer to three significant figures and include the appropriate units.

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Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.