What is the wavelength of light observed on the earth

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A star moves at speed of 5x10^-3c away from the earth. It emits light at a wavelength of 5890A (observed on the star). What is the wavelength of light observed on the earth? The maximum wavelength human eyes can see is 6500A. How fast does the star have to move for its light to be invisible to an earth observer?

Reference no: EM13683184

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What is the wavelength of light observed on the earth : A star moves at speed of 5x10-3c away from the earth. It emits light at a wavelength of 5890A (observed on the star). What is the wavelength of light observed on the earth? The maximum wavelength human eyes can see is 6500A. How fast does the star ha..

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