s = 12m
2bukit + 1 gelombang = 1.5 gelombang
1.5lamda = 12 m
lamda = 8 m
v = lamda . f
v = 8 . 4 = 32 cm/s
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s = 12m
2bukit + 1 gelombang = 1.5 gelombang
1.5lamda = 12 m
lamda = 8 m
v = lamda . f
v = 8 . 4 = 32 cm/s