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Y = 0,4 sin π(t/0,1 - x/0,3) m
ditanyakan :
f = ?
λ = ?
v = ?
jawab :
persamaan dasar
y = A sin (ωt - kx)
sehingga
y = 0,4 sin π(t/0,1 - x/0,3)
A = 0,4
ω = π/0,1
k = π/0,3
ω = 2πf
π/0,1 = 2π f
f = 1/0,2 = 5 Hz
k = 2π/λ
π/0,3 = 2π/λ
λ = 0,6 m
v = λ f
v = 0,6 x 5
v = 3 m/s