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Un faisceau de diametre uniforme dy = 1 cm, transporte une puissance de 1 000 W. II eclaire une plaque carree, de cote L =

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Un faisceau de diametre uniforme dy = 1 cm, transporte une puissance de 1 000 W. II eclaire une plaque carree, de cote L = 7,5 cm et de masse m = 1g initialement au repos et libre de se deplacer dans l'espace. Ce faisceau est constitue d'une onde electromagnetique do = 500 nm, qui se propage dans le vide selon l'axe Y negatif d'un systeme d'axes XYZ. La figure represente le champ magnetique maximum au point (0,0,0) a t=0. XA Z 60 Y L'intensite du faisceau est I w/m?. Determinez la composantes en x de la fonctions d'onde du champ electrique (a en m). Ex(T, t) = cos nt- Try+ V/m Determinez la composantes en x de la fonctions d'onde du champ electrique (y en m). Ey (T, t) V/m

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