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範例:多質點電荷之電位(能)與力學能守恆[88高聯]

右圖所示，在xy平面上分置六個+Q點電荷形成一邊長為a的正六邊形，其中點為O，則: (1)沿Z軸方向，的P點，其電場為何? (2)在P點置一質量m，電量 –q的質點，自P點沿Z軸射至無限遠處，所須之最小初速度為何?[88高聯]


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Posted in 電位能與電位.

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By admin – 2010 年 03 月 09 日

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