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  1. Trough | wave | Britannica

  2. Crest and trough - Wikipedia

  3. Trough - (Physical Science) - Vocab, Definition, Explanations

  4. Physics Tutorial: The Anatomy of a Wave - The Physics Classroom

  5. What does trough mean in physics? - Physics Network

  6. Trough - Oxford Reference

  7. Troughs - (College Physics I – Introduction) - Vocab, Definition ...

  8. Trough - (AP Physics 2) - Vocab, Definition, Explanations - Fiveable

  9. What is a peak and trough on a wave? - Physics Network

  10. TROUGH Definition & Meaning - Dictionary.com

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