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範例:靜電力與向量的合成[103學測]

三個點電荷X、Y、Z位於等腰直角三角形的三個頂點如圖所示,Z所受X、Y的庫侖靜電力之合力為F。若X與Y的位置互換,而Z的位置不變,則下列何者為Z所受X、Y的庫侖靜電力之合力方向?

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Posted in 歷屆學測(推甄)考題, 歷屆學測試題, 電力與磁力.

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