bonjour
E = 5.4 * 2.5 * 10 ⁻³ * 10 ⁻⁴ sur 3 * 10 ⁵
E = 13.5 * 10 ⁻⁷ sur 3 * 10 ⁵
E = 4.5 * 10 ⁻¹²
F = 8.1 x 4.2 x 10 ⁻⁴² / 10 ⁴
F = 34.02 x 10 ⁻⁴⁶
F = 3.402 * 10 ⁻⁴⁵