Question

The horn of a stationary car emits sounds at a frequency of 440 HZ.What frequency of note will you hear if gov drive toward this car at m/s (Vsound = 340m/s)?​

Answer 1

Answer: The frequency of the sound that you will hear depends on the speed of the car relative to the speed of sound. If you are driving towards the stationary car, the speed of the car will be added to the speed of sound, so the frequency of the sound that you will hear will be higher than 440 Hz.

To calculate the frequency of the sound that you will hear, you can use the Doppler effect equation:

f' = f * (Vsound + Vcar) / (Vsound - Vcar)

where f' is the observed frequency, f is the source frequency, Vsound is the speed of sound, and Vcar is the speed of the car.

Plugging in the values given in the question, we get:

f' = 440 * (340 + Vcar) / (340 - Vcar)

This equation will give you the frequency of the sound that you will hear as you approach the stationary car at a speed of Vcar meters per second.