λ = 2,9 м
ν = 500 Гц
υ - ?
υ = λ*ν = 2,9 м * 500 Гц = 1450 м/с
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λ = 2,9 м
ν = 500 Гц
υ - ?
υ = λ*ν = 2,9 м * 500 Гц = 1450 м/с