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physical

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A harmonic wave on a string moves along the x-axis according to:

î(x,t) = 5.0 (cm) sin[ (2.5m-1) x - (63s-1) t ]

At x = 1.0 m when t = 2.2 s the speed of the oscillations on the string is closest to ...

25.2 m/s
4.55 m/s
3.15 m/s
2.27 m/s
1.67 m/s

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