lec12-203-11-waves

# lec12-203-11-waves - Transverse wave v= T =m/L...

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Transverse wave Longitudinal (compression) wave T v = =m/L 12-0 P v

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Waves -- Two Types Transverse wave Examples: waves on string E & M radiation Longitudinal (compression) wave e.g. sound d = v t Coils separating Coils compressed Coils not yet compressed Coils move up and then back d = v t 12-1 v= speed of wave- (disturbance from equilibrium)
Transverse Wave Waves on a string: T = tension in string = density = m/L (kg/m) L = string Length m = string mass T v = 12-2

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12-3 Rarefactions Compressions V P v = where = mass/volume T v = waves on string : T= tension; m=string mass; L=string length sound waves : P= gas pressure; m= mass; V=volume =gas density =m/V =m/L
Earthquake Waves Smaller P-compression waves fist !!! Some short time to take precautions – blame on me if wrong. 12-4 http://www.physics.rutgers.edu/~croft/kobe.wmv

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12-5 Derivation of wave velocity on rope
12-6 2 T v  2 T v T 22 3 N / m kg m / s = = m / s m / s kg / m kg / m = m / s =m/ s P 2 2 2 v T RR 

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lec12-203-11-waves - Transverse wave v= T =m/L...

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