Waves and Sounds

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Reading Wave Data From a Plot


The plot below shows a representation of a transverse wave on a string at one instant in time as if you had taken a photograph freezing the shape of the wave at one instant. The vertical axis corresponds to the wave displacement and the horizontal axis shows the distance along the string. Note the units of each on the axis labels.

Sine wave

A snapshot of a transverse wave on a string at an instant in time showing wave amplitude versus distance. Created for Albert.io. Copyright 2016. All rights reserved.

The speed of the wave on the string is 48.0 m/s. What is the frequency of the wave?


28.8 Hz


0.0125 Hz


9.6 Hz


16.0 Hz


80 Hz