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Natomiast ogólne równanie fali płaskiej ma postać:
gdzie ω = 2·π/T i k = 2·π/λ
Z porównania postaci obu równań widać, że:
A = 0.06 m
2·π/T = 600·π ----> T = 2/600 = 1/300 s f = 1/T = 300 Hz
2·π/λ = π ----> λ = 2 m v = λ/T = λ·f = 2·300 = 600 m/s