When the difference in frequency is 3200 Hz ,what is the speed of a tennis ball?

To calculate the speed of a tennis ball, we need to know the frequency of the sound it is producing and the speed of sound in air.

The speed of sound in air is approximately 343 meters per second.

Given that the difference in frequency is 3200 Hz, we can use the formula:

Speed = frequency * wavelength

Since the speed of sound is constant, we can set the two frequencies equal to each other:

343 = (frequency1 - frequency2) * wavelength

3200 = 343 * wavelength

Wavelength = 3200 / 343 = 9.33 meters

Now we can calculate the speed of the tennis ball:

Speed = frequency * wavelength
Speed = 3200 * 9.33
Speed = 29856 meters per second

Therefore, the speed of the tennis ball is approximately 29856 meters per second.