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# End of chapter exercises

## Longitudinal waves

Textbook Exercise 9.1

Which of the following is not a longitudinal wave?

1. light

2. sound

3. ultrasound

Solution not yet available

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

1. solid

2. liquid

3. gas

4. vacuum

Solution not yet available

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?

Solution not yet available

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

Solution not yet available