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= 40 m/s
f = 100 Hz
λ ?
v = λ . f
λ = v / f
= 40 / 100
= 0,4 m
s = 120 m
t = 3 s
f = 100 Hz
Ditanya: λ...?
jawab:
v = s/t
v = 120/3
v = 40 m/s
λ = v/f
λ = 40/100
λ = 0,4 m