part e what is the period of this wave part f what is the sp

part e: what is the period of this wave?
part f: what is the speed of propagation v of this wave?

Solution

phase phi(x,t) of the wave

= k * x omega * t

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wavelength = 2 pi / k

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period of the wave

= 2 pi / omega

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speed of propagation v of this wave

v = omega / k