How Is This Standing Wave Possible?

When standing waves are allowed at 15, 30, and 45 hertz on a string, then we should not see a standing wave pattern at 22 hertz. Yet, we do in this demonstration. This explains why. Want Lecture Notes? https://www.flippingphysics.com/stand... This is an AP Physics 1 Topic.

0:00 Intro
0:28 Demonstrating the question
1:44 Why this standing wave should NOT be possible
2:26 Why this standing wave actually IS possible
3:25 Determining the speed of the waves on this string

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Thank you to Kristie Webb for transcribing the English subtitles of this video.

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