We think you are located in United States. Is this correct?

# Practise now to improve your marks

You can do it! Let us help you to study smarter to achieve your goals. Siyavula Practice guides you at your own pace when you do questions online.

Sign up to improve your marks

## Waves

Exercise 8.2

A wave travels along a string at a speed of $$\text{1,5}$$ $$\text{m·s^{-1}}$$. If the frequency of the source of the wave is $$\text{7,5}$$ $$\text{Hz}$$, calculate:

1. the wavelength of the wave

2. the period of the wave

Solution not yet available

Water waves crash against a seawall around the harbour. Eight waves hit the seawall in $$\text{5}$$ $$\text{s}$$. The distance between successive troughs is $$\text{9}$$ $$\text{m}$$. The height of the waveform trough to crest is $$\text{1,5}$$ $$\text{m}$$.

1. How many complete waves are indicated in the sketch?

2. Write down the letters that indicate any TWO points that are:

1. in phase

2. out of phase

3. Represent ONE wavelength.

3. Calculate the amplitude of the wave.

4. Show that the period of the wave is $$\text{0,625}$$ $$\text{s}$$.

5. Calculate the frequency of the waves.

6. Calculate the velocity of the waves.

Solution not yet available