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n = 2
L = 60 cm
v = 10 cm/s
ditanya =
T = ...
dijawab =
λ = L / n
= 60 cm / 2
= 30 cm
v = λ . f
f = v / λ
= 10 cm/s / 30 cm
= 1/3 Hz (0,333... Hz)
T = 1 / f
= 1 / 1/3 Hz
= 3 s (b)