Which of the following is not a longitudinal wave?

1. light

2. sound

3. ultrasound

Which of the following media can a longitudinal wave like sound not travel through?

1. solid

2. liquid

3. gas

4. vacuum

A longitudinal wave has a compression to compression distance of \(\text{10}\) \(\text{m}\). It takes the wave \(\text{5}\) \(\text{s}\) to pass a point.

1. What is the wavelength of the longitudinal wave?

2. What is the speed of the wave?

A flute produces a musical sound travelling at a speed of \(\text{320}\) \(\text{m·s$^{−1}$}\). The frequency of the note is \(\text{256}\) \(\text{Hz}\). Calculate:

1. the period of the note

2. the wavelength of the note