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**[SOLVED] What is the phase difference between the motions of two points on the wave..**

## Homework Statement

The frequency of a certain wave is [tex]500Hz[/tex] and its speed is [tex]340ms^{-1}[/tex].What is the phase difference between the motions of two points on the wave [tex]0.17cm[/tex] apart?

## Homework Equations

[tex]x = \frac{d\lambda}{a}[/tex]

[tex]v = f\lambda[/tex]

## The Attempt at a Solution

[tex]f = 500Hz \ \ \ v = 340ms^{-1} \ \ \ a = 0.17 \times 10^{-2} cm[/tex]

[tex]v = f\lambda[/tex]

[tex]\lambda = \frac{v}{f} = \frac{340}{500} = 0.68m[/tex]

What should I do next?

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