## Physics: Principles with Applications (7th Edition)

As the string oscillates, it moves nearby air molecules, which vibrate at the same frequency. The speed of sound in air at the given temperature is 343 m/s. From the frequency of 330 Hz, we can find the wavelength of the sound wave in air. $\lambda = \frac{v}{f} = \frac{343 m/s}{330 Hz} = 1.04 m.$ The sound waves have a shorter wavelength in air than the waves have on the string.