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λ = 90/1,5 = 60 cm = 0,6 m
v = f . λ = 8Hz x 0,6 m = 4,8 m/s
λ = 90 cm =0,9 m
dit : v ?
Jwb :
v = f . λ
= 8 Hz . 0,9 m
= 7,2 m/s
maaf ya kalau salah