_zaly__ Posted January 6, 2021 Share Posted January 6, 2021 Salut, j'arrive pas à comprendre comment résoudre l'item B .. Quote Link to comment Share on other sites More sharing options...
Ancien Responsable Matière Solution SBY Posted January 6, 2021 Ancien Responsable Matière Solution Share Posted January 6, 2021 Salut @_zaly__ ! Il faut utiliser la formule du cours qui nous dit que En= -13,6 / n2 = E1 / n2 Donc E3 = E1 / 9 J'espère que c'est plus clair. Bonne soirée ! _zaly__ and Carlaaa 2 Quote Link to comment Share on other sites More sharing options...
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