lenaaaaA Posted November 13, 2020 Share Posted November 13, 2020 bonjour, comment on calcule la composante transversale de l'aimantation svp ( comment on trouve M0) merci d'avance Quote Link to comment Share on other sites More sharing options...
FromageDeChèvre Posted November 13, 2020 Share Posted November 13, 2020 (edited) @lenaaaaA Après un temps t : Composante longitudinale : Mz = M0 (1 - (1-cos Θ) . e-t/T1) Composante transversale : Mx = M0 . sin Θ . e-t/T2 Edited November 13, 2020 by FromageDeChèvre Quote Link to comment Share on other sites More sharing options...
lenaaaaA Posted November 13, 2020 Author Share Posted November 13, 2020 @FromageDeChèvre ok merci ! mais juste que vaut M0 dans ce cas ? Quote Link to comment Share on other sites More sharing options...
Solution FromageDeChèvre Posted November 14, 2020 Solution Share Posted November 14, 2020 En fait on ne te demande pas de calculer M0 en soit, mais le pourcentage de M0. Avec cette formule : Mx = M0 . sin Θ . e-t/T2 il faut calculer : sin Θ . e-t/T2 Pour Θ=90º : sinΘ=1 ==> Mx = M0 . e-t/T2 Avec T2(A)= 100 ms = 0,1s : e-t/T2 = e-0,1/0,1 = e1 = 0,37 Donc C FAUX, et D VRAI Quote Link to comment Share on other sites More sharing options...
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