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{"ops":[{"insert":"The Sun has a radius of 7\u00d710 to raise the power of 8 m, approximately, and a period of rotation\nabout its axis equal to 24.7 days. What is the Doppler shift of a spectral line with\nlaboratory wavelength 500 nm, in the light emitted (a) from the center of the Sun\nand (b) from the edges of the Sun\u2019s disk at its equator?\n\n"}]}
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