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

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/ $\pi$ ) sin $\pi$ (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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