Ocecrf Posted November 22, 2020 Share Posted November 22, 2020 Bonjour j’aurai besoin de votre aide pour ce QCM s’il vous plait je ne comprend pas comment faire le D et E Quote Link to comment Share on other sites More sharing options...
Solution SetiaHatiTerate Posted November 22, 2020 Solution Share Posted November 22, 2020 Salut, Il faut utiliser la formule suivante: Mz,90° (t) = (1-e^[-t/T1]) . M0 <=> Mz,90° (t) / M0 = 1 - e^(-t/T1) = 1 - e^(- 140 / 700) = 1 - 0,82 = 0,18 <=> 18% => D est vrai Quote Link to comment Share on other sites More sharing options...
Ocecrf Posted November 23, 2020 Author Share Posted November 23, 2020 Merci beaucoup Quote Link to comment Share on other sites More sharing options...
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