note2.py

Created on January 18, 2024

469 Bytes

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la tranche d'air correspond au trou
doit etre à la pression atmospherique
car la pression est une grandeur physique continue
a cetendroit x=n de l'ouverture*L
l'onde de supression acoustique est nulle p =0

P= P0 + p = P0

or le mode 2 impose un ventre en x =(1/3)L
c a d P est max 
le mode 2 ne peut plus exister 

quadrature avance pi/2
quadrature retard -pi/2
opposition de phase -pi
delta phi = 2pifdeltat

-lambda/4 ==> -2pi/4

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