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Understanding Displacement-distance and Displacement-Time Graphs of a Longitudinal Wave

Writer: Evan Toh
Evan Toh
Sep 21
1 min read

For sound waves, the information can be represented on three graphs.

Namely: Pressure-distance, Displacement-Distance and Displacement-Time graphs.


Since sound waves consist of a series of compressions (high pressure) and rarefactions (low pressure), these information can be represented on a pressure-distance graph.


For a displacement-distance graph, you can get the (1) amplitude and (2) wavelength of the sound waves.


For a displacment-time graph, you can get the (1) amplitude and (2) period of the sound waves.


View the video explanation


2 Comments


bella yuniar
Oct 03

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bella yuniar
Oct 01

Thank you for this clear and informative article. The subject is explained in a straightforward way, making it easy to understand.

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