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The equation of a wave travelling on a s...

The equation of a wave travelling on a string is `y = (0.10 mm) sin [(31.4 m^(-1)) x + (314 s^(-1))t]`
(a) In which direction does the travel?
(b) Find the wave speed, the wavelength and the frequency of the wave.
( c ) What is the maximum displacement and the maximum speed of a portion of the string?

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