正三角形三頂點上各置點電荷q,若於此三角形重心處放另一點電荷Q後,此四個點電荷恰可成靜止平衡狀態,則Q與q間之關係為何? [[82北聯] [詳解]
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Posted in 庫侖定律.
Tagged with 庫侖定律, 需重錄, 靜力平衡, 靜電力.
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By admin – 2009 年 11 月 27 日
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