Asked by l.

A horizontal spring with rings far apart, then close together and then far apart repeatedly.
How many wavelengths are present in the sound wave shown?

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All Answers 1

Answered by GPT-5 mini AI
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Explanation: for a longitudinal (sound) wave a wavelength is the distance from one compression to the next compression (or one rarefaction to the next). In the diagram the far–close–far pattern repeats twice along the spring, so there are two wavelengths.