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32. (a) Let the phase difference be
φ
. Then from Eq. 16–52, 2
y
m
cos(
/2) = 1.50
y
m
, which
gives
1
1.50
2cos
82.8 .
2
m
m
y
y
−
§·
==
°
¨¸
©¹
(b) Converting to radians, we have
= 1.45 rad.
(c) In terms of wavelength (the length of each cycle, where each cycle corresponds to 2
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 Spring '08
 Any
 Physics

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