題組內容

1.(15%) Consider three fixed point charges are located in a rectangular coordinate sys Q1= +4 μC is located at (0 cm, 2 cm), charge Q2 = -3 μC is located at(6373403607bd2.jpg cm, 1 cm), and charge Q3 = +5μC is located at (6373403607bd2.jpg  cm, -1 cm). (The permittivity (ε0)=637340a686928.jpg(F/m)

(a) Determine the electric field intensity at (0,0). (5%)