How do you find the wavelength of a 68,000 Hz ultrasound wave in air?
To find the wavelength of a sound wave, you can use the formula:
Wavelength = Speed / Frequency
where:
- Wavelength is the distance between two consecutive peaks or troughs of a wave
- Speed is the velocity at which the wave is traveling
- Frequency is the number of cycles or vibrations of the wave per second
In this case, we are given a frequency of 68,000 Hz (or 68,000 cycles per second) for an ultrasound wave in air. The speed of sound in air is approximately 343 meters per second.
Substituting these values into the formula:
Wavelength = 343 m/s / 68,000 Hz
Simplifying this equation:
Wavelength ≈ 0.005 meters or 5 millimeters
Therefore, the wavelength of a 68,000 Hz ultrasound wave in air is approximately 0.005 meters or 5 millimeters.