100+ 50 cm 65 db PowerPoint (PPT) Presentations, 50 cm 65 db PPTs

50 cm 65 db - PowerPoint PPT Presentation

Sound

Sound. Sound Waves. Sound waves are longitudinal waves. The source of a sound wave is a vibrating object. Only certain wavelengths of longitudinal waves in the air can be detected as sound. Sound Waves. Sound waves require matter in order to propagate. They cannot travel in a vacuum

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50 cm 65 db - PowerPoint PPT Presentation

Sound