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Let assume the current temperature of the cosmic microwave background radiation is 2.9 K. [10 points) a). What is the energy-flux? b). What is

Let assume the current temperature of the cosmic microwave background radiation is 2.9 K. [10 points) a). What is the energy-flux? b). What is the peak-wavelength of the CMB today? a What was the temperature of the background radiation at z= 1099? [Hint: Apply Scale Factor]

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