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ceodat148
2 năm trước
cho 2 điện tích q1= -4 micro cu lông ; q2=16 micro cu lông. Đặt tại 2 điểm cách nhau 50 cm trong không khí A- vẽ và tính lực tương tác giữa 2 điện tích B- tìm vị trí đặt q3 để q3 nằm cân bằng C- cho q3= 1 micro cu lông đặt tại C sao cho CA= 40 cm CB=30cm . Tính hợp lực tác dụng lên q3
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