Question: Robert se tient prs d'un dfil, coutant le son d'un orchestre d'cole avec majorettes. La vitesse du son dans l'air est 330 m/s. Le dfil

Robert se tient prs d'un dfil, coutant

le son d'un orchestre d'cole avec majorettes. La vitesse du son dans l'air est 330 m/s. Le dfil de l'orchestre passe en avant puis s'loigne de Robert avec une vitesse de 2,0 m/s. Le tuba joue une note d'une frquence de 96 Hz. Quelle frquence Robert entend-il quand le dfil s'loigne de lui?

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