Physique Formules Flashcards by Solen K

Q

Intensité sonore

A

I=P/S ou I=I⁰ × 10 exp L÷10

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Q

Niveau sonore

A

L=10logI/I0

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Q

Atténuation

A

Lincident - Ltransmis

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Q

Relation v,T,λ et f

A

v= λ /Τ ou v=λ×f

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Q

Écart angulaire

A

Θ=λ÷ a ou θ=L÷2D

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Q

Interference constructive

A

δ=λ×k

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Q

Interference destructive

A

(2k+1)×(λ÷2)

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Q

Interfrange

A

i=(λ×D)÷a

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Q

Effet doppler

A

Δf=fr-fe

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Q

E et R se rapprochent (fréquence)

A

Δf>0

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Q

E et R s’éloignent (fréquence)

A

Δf<0

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Q

E et R se rapprochent (λ)

A

Δλ<0

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Q

E et R s’éloignent (λ)

A

Δλ>0

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