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An Equation That Gives the Particle Displacement for a Medium π\pi

Question 41

Multiple Choice

An equation that gives the particle displacement for a medium in which there is a simple harmonic traveling wave is
Y(x, t) = (2/ π\pi ) sin π\pi (3x + 2t) ,
Where x and y are in centimeters and t is in seconds. At t = 2 s the speed of a particle at the location x = 4 cm is


A) 0
B) 2 cm/s
C) 4 cm/s
D) 6 cm/s
E) 8 cm/s

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