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Write y(x,t) for a traveling wave from known amplitude, frequency and wavelength.

A wave traveling on a wire has a frequency f= .8 cy/sec, an amplitude Y= .18 m and a wavelength L= 4.0 m.
At a time t= .25 sec, find the x coordinates of all the crests.

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Solution:
Physics statements:
A. The general equation y(x,t) for a traveling wave with angular frequency w, wave number k, and amplitude Y is:
(1) y= Y sin (k x - w t)
B. Recall that k= 2 Pi / L and w= 2 Pi f
C. ...

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