A longitudinal wave is travelling along the x-axis through a medium. The equation for that wave is y (t) = 0.0020 - cos[15 - 7 x 52 T t where the units are Sl. The maximum speed of a particle in the medium is closest to O 0.64 m/s O 0.43 m/s O 0.74 m/s O 0.33 m/s O 0.53 m/s
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