boum Posted September 15, 2019 Posted September 15, 2019 coucou y'aurais pas une erreur dans ce calcul ? parce que quand je le fais je trouve que c'est égale à 2,5.103J soit 2,5Kj Quote
Solution maestro Posted September 15, 2019 Solution Posted September 15, 2019 (edited) 2.5*10^(-3)*(10^4)^2=2.5*10^(2*4-3)=2.5*(5) du coup ca fait plus Edited September 15, 2019 by maestro Quote
Neïla Posted September 15, 2019 Posted September 15, 2019 salut ! Ec = 1/2 x 5 x 10-3 x (104)2 = 2,5 x 10-3 x 108 = 2,5 105 = 250 103 = 250 KJ :)) (maestroprapide) Quote
boum Posted September 15, 2019 Author Posted September 15, 2019 OMG mais oui ! jsuis trop bête. Merci à vous deux ! Quote
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