Respuesta :
Answer:
Riegel's velocity relative to us is: [tex]v_{r} = 2.07 * 10^4 m/s[/tex]
Explanation:
Frequency of Riegel's spectrum, [tex]f_{r} = f - f'[/tex]
[tex]f' = f - f_{r} = 4.26 * 10^{10} Hz[/tex]
From the relativistic doppler effect, the wavelength of Riegel's spectrum is:
[tex]\lambda = \lambda_{r} (1 - \frac{v_{r} }{c} )\\\frac{c}{f} = \frac{c}{f_r} (1 - \frac{v_{r} }{c} )\\v_{r} = (\frac{f - f_r}{f} )c\\Since, f' = f - f_r\\v_{r} = (\frac{f'}{f} )c\\v_{r} = (\frac{4.26 * 10^{10}}{6.17 * 10^{14}} ) * (3 * 10^8)\\v_{r} = 2.07 * 10^4 m/s[/tex]
Answer:
The answer is 20713.13.
Explanation:
The previous answerer did everything correctly but left the answer in its unexpanded form. For Acellus, this is the correct answer.
