A magic mirror always moves toward the viewer with the velocity r: You, emitting light of frequency f, look in the magic mirror and see your reflection With the source frequency being f, let the frequency seen by the mirror (in the mirror's frame of reference) be f', and let the frequency you receive your reflection with be f". The goal is to calculate the frequency of the light you receive. Frequencies CASH C's-C poi"1ts(g*'ac:ecl) Calculate the ratios of the frequencies f'f'f and f\"ff. Enter responses in terms of some or all of beta for .8. fvf= fur: Frequency Difference 0.0/10.0 points (graded) Calculate the difference between the transmitted and received frequencies A = f" - f. The difference frequency is what the heterodyne method produces as a signal in a radar detector. Notice the transmitted frequency f is factored out of the answer box. Enter responses in terms of some or all of beta for B. A = SUBMIT You have used 0 of 10 attempts Save Exact Speed from Relative Frequency Difference 0.0/10.0 points (graded) Calculate S in terms of the relative frequency difference r = A/ f and the source frequency. From B you can then calculate the speed v = Bc Enter responses in terms of some or all of r forr. B =Approximate Speed from Relative Frequency Difference 0.0/10.0 points (graded) The previous result is exact. However the exact expression is in terms of the relative frequency difference r and you can use the fact r