Ondes Flashcards

1
Q

Densité de masse linéique

A

μ = M/L
(kg/m)

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2
Q

Vitesse de propagation d’une onde sur une corde tendue

A

v = √(Ft/μ)

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3
Q

Nombre d’onde

A

k = 2π/λ
(rad/m)

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4
Q

Vitesse de la lumière

A

c = 3x10⁸
(m/s)

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5
Q

Période de l’onde

A

τ = 1/f
(s)

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6
Q

fréquence de l’onde

A

f = 1/τ
(Hz)

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7
Q

Lien entre la longueur d’onde et la période
+ vitesse de propagation de l’onde

A

λ = vτ = v/f

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8
Q

Fréquence angulaire

A

ω = 2π/τ
(rad/s)

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9
Q

Fréquence du nième harmonique

A

f = v/2L

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10
Q

Vitesse du son

A

340 m/s

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11
Q

Fréquence de résonance d’un tuyau fermé

A

fn = nv/4L
où n = 1,3,5,…

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12
Q

Fréquence de résonance d’un tuyau ouvert

A

fn = nv/2L
où n = 1,2,3,…

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