P17_028 - (a) Therefore, = 2 /k = 0 . 31 m. (b) The phase...

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28. We compare the resultant wave given with the standard expression (Eq. 17-39) to obtain k =20m 1 = 2 π/λ ,2 y m cos( 1 2 φ )=3 . 0mm, and 1 2 φ =0 . 820 rad.
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Unformatted text preview: (a) Therefore, = 2 /k = 0 . 31 m. (b) The phase diFerence is = 1 . 64 rad. (c) And the amplitude is y m = 2 . 2 mm....
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