Report - s d'examen phys 2008 br de phy session juin maroc · τ ˘ˇ ˆ ( 2-1 لا ا t uc e τ ⇐ =360 t c e u − 360 ⇐ τ uc =−t 360 ⇐ ln r c t uc. 360 ln = = Ω ⇐ × × = ×

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