(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Rearranging a Relativity Equation

1. The problem statement, all variables and given/known data

Rewrite equation:

[tex] f = \sqrt{\frac{c + u}{c - u}}f_0 [/tex]

to find the relative velocityubetween the electromagnetic source and an observer in terms of the ratio of the observed frequency and the source frequency of light.

What relative velocity will produce a 3.0 decrease in frequency and

2. Relevant equations

Rearangement of:

[tex] f = \sqrt{\frac{c + u}{c - u}}f_0 [/tex]

3. The attempt at a solution

I seem to get stuck when trying to rearrange the equation:

[tex] f = \sqrt{\frac{c + u}{c - u}}f_0 [/tex]

[tex] \frac{f}{f_0} = \sqrt{\frac{c + u}{c - u}} [/tex]

[tex] (\frac{f}{f_0})^2 = \frac{c + u}{c - u} [/tex]

[tex] (c - u)(\frac{f}{f_0})^2 = c + u [/tex]

But I am not sure where to go from here.

Any suggestions?

TFM

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# Homework Help: Rearranging a Relativity Equation

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