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Physics Unit16: Electric Charge and Electric Field (id: ad608cd85)

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admin 发表于 2024-2-6 09:50:02 | 显示全部楼层 |阅读模式
本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field,类别为 通用国际物理

[单选题]
A copper penny has a mass oj,jw 82h ,gm a8-xlub;vc t6wsf 3.0 g. A total sa.:nlz2s2y hnso/*ued av 6u+a8o 2l of 4.0×1012electrons are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

A. 31cm
B. 33cm
C. 35cm
D. 37cm


参考答案:  C


本题详细解析: 暂无

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