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f = 20 Hz
v = lamda.f
v = 0,04.20
v = 12,8 m/s
• Resonansi
L1 = 40 cm = 0,4 m
v = 320 m/s
f = __?
Panjang kolom udara saat resonansi pertama
L1 = ¼ λ
0,4 = ¼ λ
λ = 4 (0,4 m) = 1,6 m
Frekuensi
v = λ f
→ f = v / λ
→ f = 320 / 1,6 = 200 Hz ← jwb