Réponses

2014-05-12T17:36:24+02:00
Bonsoir

E = 9 x 10⁻¹² x 0.005 x 10²⁰ sur 4 x 10¹⁵ x 5 x (10⁷)⁻³

E = 0.045 x 10 ⁸ sur 20 x 10 ⁻⁶
E = 0.00225 x 10 ¹⁴
E = 2.25 x 10 ¹¹