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Three radio-equipped plumbing vans are broadcasting on the same frequency,f0. Van 1 is moving north of van 2 with speed v, van 2 is fixed, and van 3 is moving west of van 2 with speed v. what change in frequency (f-f0) does van 3 hear from van 2? From van 1?

Attempt at solution:

f= f0 * [tex]\sqrt{(1-\beta)/(1+\beta)}[/tex]

is the frequency rate that van 1 and van 2 will receive signals from one another and at which van 2 and van 3 will receive signals from each other.

However, I am confused as to how to find the rate at which van 3 hears from van 1?

I know f=1/t

but I cannot see how to make this work.

Any help would be greatly appreciated.

Stephen

Pictorial representation attached so the placement of the vans is more clear.

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

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Quick Doppler Shift question

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