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Engenharia Física ·

Física

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Lista 1 L12 = L23 L12 = 0 Resposta em módulo q1/q2 = 4 q1/q2 = -4 q2 q1 + 1,0 . μC q2 = -3,0 . μC L = 10 cm F13 = F23 K . q1 q3 / x = K . q2 q3 / (x + L)2 1/x = 3/(x + L)2 1/x = √3/x X + L = √3x X + 10 = √3x 10 = √3 x - x 10 = x (√3 - 1) x = 10/(√3 - 1) x = 13,06 cm x = -13,66 cm = -13,7 cm Lista 2 Ep = 0 d = 3R q1/q2 Kq1R/(R2 + R2)3/2 = Kq22R2/[(2R)2 + R2]3/2 q1/q2 = 29/5√5 q2 √3 2R/5√5 q1/q2 = -4√5/5 0,506 -9 = -3,20 x 10^-19 C +9 = 3,20 x 10^-19 C Ponto P1 y = 4 m Teorema Pitágoras (-3)2 + y2 = a2 9 + 16 = a2 a2 = 25 a = 5 m Eqy - Eqy = 0 Eq = 2.Eq x ET = 2. sen θ . 9 · 10^9 · 3,20 x 10^-19/25 ET = 2. 3/5 · 9 · 10^9 · 3,2 x 10^-19/25 ET = 1,38 · 10^-10 N/C sen θ = 3/5 cos θ = 4/5 Lista 3 Normal E = 1800 N/C L3 = 3,2 mm = 0,0032 m Φ = E . A . cos β Φ = 1800 . 0,0032 . 0,0032 . cos 145º Φ = 0,018432 . cos 145º Φ = -0,015 N.m²/C E = 3,0 mm N/C α = 11 cm = 0,11 m E = 3 . 10^-3 N/C A = πr² A = 3,1416 . 0,11 . 0,11 Φ = E . A . cos β Φ = 3 . 10^-3 . 3,1416 . 0,11 . 0,11 . cos 180º Φ = 0,1140 = 1,14 . 10^-4 N m²/C