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v = 340 m/s
T = 1 s = 425
ditanya:
[lambda] = ... ?
dijawab:
[lambda] = v . T
[lambda] = 340 . 425
[lambda] = 144500 cm = 144,5 m
keterangan:
[lambda] = panjang gelombang (m)
v = cepat rambat gelombang (m/s)
T = periode gelombang (s)
semogabermanfaat ^_^