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nguyenhaibach77
2 năm trước
Hai điện tích điểm q1 = 4.10-7 C, q2 = -4.10-7C đặt cố định tại hai điểm A và B trong không khí, AB = 3 cm. Hãy xác định lực điện tác dụng tác dụng lên điện tích q3 = 4.107C đặt tại C nếu: a) CA = 2 cm; CB = 1 cm b) CA = 2 cm; CB =5cm c)CA = CB = AB
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