Question

What frequency of sound traveling in air at 20°C has a wavelength equal to
1.7 m,
the average height of a person?

Answer 1

The frequency of a sound can be calculated as follows:

$$\nu = \frac{v}{\lambda},$$

where v is the speed of sound in air at 20°C (according to the table value, v = 343.1 m/s), \lambda is the wavelength. Hence:

$$\nu = \frac{343.1}{1.7} \approx 202 \, Hz$$

Answer: 202 Hz.