Bonjour,
1) λ = c/f
soit λ = 340/15.10³ ≈ 2,27.10⁻² m
2) idem : λ = 1530/190 ≈ 8,05 m
3) λ = 1530/2.10⁶ = 7,65.10⁻⁴ m
4) d = v x Δt
doit d = 340 x 3 = 1020 m
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Bonjour,
1) λ = c/f
soit λ = 340/15.10³ ≈ 2,27.10⁻² m
2) idem : λ = 1530/190 ≈ 8,05 m
3) λ = 1530/2.10⁶ = 7,65.10⁻⁴ m
4) d = v x Δt
doit d = 340 x 3 = 1020 m