Summary

• ? = 2?f = 2?/T k= 2?/?

• v = ?/k = f ?= ?/T

• wave speed= one wavelength per period

• y(x,t)=ym sin( kx- ?t-?) describes a wave moving right at constant speed v= ? /k

• y(x,t)=ym sin( kx+ ?t-?) is a wave moving left

• v = (F/?)1/2

• F = tension ? = mass per unit length

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