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Two traveling sinusoidal waves are described by the wave functions
y, = 4.75 sin [¤(3.75x – 1230t)]
y, = 4.75 sin [¤(3.75x – 1230t – 0.250)]
where x, y,, and y, are in meters and t is in seconds.
(a) What is the amplitude of the resultant wave function y, + y,?
(b) What is the frequency of the resultant wave function?
Hz

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