作者dfgcynnl (超级初学者)
站内Physics
标题[问题] exert该如何圆满解释使net attractive force的解释得以完整ꄊ时间: Fri Feb 29 19:39:47 2008
本文：
A negatively charged rod would push the electron sea slightly
away, polarizing the metal to have a positive upper surface charge
and negative lower surface charge. Once again, these
are the conditions for the charge to exert a net attractive force
on the metal. Thus out charge model explains how a charged model
explains how a charged object of either sign attracts neutral
pieces of metal.
其实不只是exert，整段其实还是有太多不能了解的地方
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