The ptich of the whistle of an engine appears to rise to 1,2 times the original value when it approaches a stationary observer. Calculate the speed of the engine if the speed of sound in air is 330 m/s.`v'=((V)/(V-V_(S)))v`

Explanation

To solve the problem, we will use the Doppler effect formula for sound when the source is moving towards a stationary observer. The formula for the apparent frequency \( f' \) when the source is approaching is given by:

\[ f' = f \cdot \frac{V}{V - V_s} \]

Where:
- \( f' \) = apparent frequency
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