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L = 5 m
m = 4×10^-3 kg
F = 2 N
f = 50 Hz
v = __?
λ = __?
kecepatan rambat gelombang transversal pada dawai
v = √(F L / m)
v = √(2 • 5 / 4×10^-3)
v = √(10⁴ / 4)
v = 100/2 = 50 m/s ← jwb
panjang gelombang
v = λ f
50 = λ • 50
λ = 1 m ← jwb