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WaveIntro

# WaveIntro - Ch15 Mechanical Waves Liu UCD Phy9B 07 1 15-1...

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Liu UCD Phy9B 07 1 Ch15. Mechanical Waves

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Liu UCD Phy9B 07 2 15-1. Introduction Source: disturbance + cohesive force between adjacent pieces A wave is a disturbance that propagates through space Mechanical wave: needs a medium to propagate Wave pulse
Liu UCD Phy9B 07 3 Distinctions Wave velocity vs. particle velocity Wave can travel & Medium has only limited motion Waves are moving oscillations not carrying matter along What do they carry/transport? Disturbance & Energy

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Liu UCD Phy9B 07 4 Types of Waves Transverse wave Longitudinal wave
Liu UCD Phy9B 07 5 More Examples Transverse Longitudinal Transverse + Longitudinal

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Liu UCD Phy9B 07 6 Sound Wave: Longitudinal
Liu UCD Phy9B 07 7 15-2. Periodic Waves

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Liu UCD Phy9B 07 8 Continuous / Periodic Wave Caused by continuous/periodic disturbance: oscillations Characteristics of a single-frequency continuous wave Crest / peak Trough Wavelength: distance between two successive crests or any two successive identical points on the wave Frequency f : # of complete cycles that pass a given point per unit time Period T : 1/ f
Liu UCD Phy9B 07 9 Wave Velocity v= λ /T = λ f Different from particle velocity

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WaveIntro - Ch15 Mechanical Waves Liu UCD Phy9B 07 1 15-1...

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