Jawabanmu

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2014-05-03T18:31:01+07:00
Lamda= 30cm x 4 = 120cm= 1,2m
v= f x lamda= 300 x 1,2m= 360m/s
lamda= 30cm x 4 = 120cm= 1,2m
v= f x lamda= 300 x 1,2m= 360m/s
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