(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A source of 1-kilohertz sound is moving straight toward you at a speed .9 times the speed of sound. The frequency you receive is:

2. Relevant equations

[tex] \nu = \frac{v}{\lambda} [/tex]

[tex] f' = \frac{v + v'}{v} f [/tex]

3. The attempt at a solution

When I attempt the solution I get [tex] f' = \frac{v + .9v}{v} f = 1.9 f [/tex]. However, that is not correct. The answer is 10 f. What am I missing?

Thx

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# Doppler Effect of a 1-kilohertz sound

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