Fanaticus
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Homework Statement
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:
Homework Equations
\nu = \frac{v}{\lambda}
f' = \frac{v + v'}{v} f
The Attempt at a Solution
When I attempt the solution I get f' = \frac{v + .9v}{v} f = 1.9 f. However, that is not correct. The answer is 10 f. What am I missing?
Thx