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n = 3
t = 0,5 s
λ = 50 cm / 2
= 25 cm
= 0,25 m
ditanya =
a). f = ...
b). v = ...
dijawab =
a). f = n / t
= 3 / 0,5 s
= 6 Hz
b). v = λ . f
= 0,25 m . 6 Hz
= 1,5 m/s