本题目来源于试卷: Electric Charge and Electric Field，类别为 IB物理学
[问答题]
A positively charged : .hxa gwszd-c 7d3asf.f(u4u ;b n2a. wlz,skd4b/rmrod is brought close to a neutral piece of paper, which it attracts. Draw a diagram showing the separation of charge awb za4d,k nls2b/r;m. nd explain why attraction occurs.
参考答案: The positively charged rod
slightly polarizes the molecules in the paper.
The negative charges in the paper are slightly attracted to the part of
the paper closest to the rod, while the positive charges in the paper are
slightly repelled from the part of the paper closest to the rod. Since the opposite charges are now closer
together and the like charges are now farther apart, there is a net attraction
between the rod and the paper. 
本题详细解析:
暂无
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