anhnguyenngocle anhnguyenngocle
  • 14-08-2021
  • Physics
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cho hình vuông ABCD, tại A và C đặt các điện tích q1=q3=q. Hỏi phải đặt ở B một điện tích bằng bao nhiêu để cường độ điện trường bằng 0

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wmobacher
wmobacher wmobacher
  • 14-08-2021
The problem is not clear
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