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許霏

拜託教我🙏

(B)乙與甲帶同性電或乙不帶電 9x993 8. √(C)乙、丙帶異性電 (D)丙與乙帶異性電或丙不帶電。 R & ( ) 2. 大小相同的兩個金屬球A、B,A帶6庫侖正電荷,B帶12庫侖的負電荷。若將 A、B兩球接觸後,再分開,且接觸前後兩球距離不變,則接觸前A、B間的靜電 力大小是接觸後的多少倍? (A) 2 (B) 4 (C) 8 (D) 12。後 啦 6+12 2 6x12-12

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