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f = 220 Hz
λ = 40 cm = 0,4 m
dit : v ?
dijawab :
v = f x λ
= 220 x 0,4
= 88 m/s
f=frekuensi(Hz)=220 Hz
Panjang gelombang=40 cm=0,4 m
v= panjang gelombang . f
v= 0,4 m . 220 Hz
v= 88 m/s