Question

1. Astronomers use emission wavelengths (or frequencies) to determine the relative velocities of nearby stars and galaxies. One of the wavelengths commonly measured by astronomers is the H₂ emission wavelength. The H₂ emission wavelength is 21 cm.
   
   A. Determine the frequency of the H₂ emission wavelength.
   
   B. Determine the relative velocity of the nebula emitting the H₂ wavelengths and the observers on Earth (ignore any relativistic effects). The measured frequency on Earth is 40 GHz.
   
   C. Would the change in frequency be considered a Red-shift or a Blue-shift?

.

Answer 1

プー ะ 14.29 x 108 Hz x10 ニ 1-43 x10

143 x 109 e 0 X10 1+β 1-43x109 482.43 lt 98243-) 183.43 8143 81. 8 483.43 mebula

eany kas