Tại hai điểm A và B cách nhau 10 cm trong không khí có đặt hai điện tích q1 = q2 = 16.10-8C. Xác định cường độ điện trường do hai điện tích điểm này gây ra tại a.C biết AC = 6cm, BC = 8 cm. b.D biết AD = BD = 10cm

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