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wu li ji suan ti jie si lu li ju ( xu )
Pages: 30-31
Year: Issue:  3
Journal: Required Reading for Junior Middle School Students

Abstract: <正> (接上期) 四、数理结合,灵活运用数学知识是解决物理计算题的有力工具,对有些物理难题,可从数学入手,这样会变得比较容易例4 如图所示,滑动变阻器的最大值为50欧,当滑片P位于什么位置时,a、b间的电阻值最大?此时a、b间的最大阻值是多少?
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