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“水银溢出”是中学物理热学部分的一类典型问题 ,其特点表现为 :分析条件隐蔽 ,临界取值复杂 ,所求结果通常需要讨论、验算 .正因如此 ,这类问题无形中成为许多学生认知中的难点。本文仅就常见题型作一归类分析 .一、水银因“倒置”而溢出例 1 长Ｌ=1 0 0ｃｍ且一端封闭的均
“Hydraulics spillover” is a typical problem in the physics of middle school. It is characterized by concealment of the analysis conditions and complexity of the critical values. The results usually need to be discussed and checked. As a result, these problems have become virtually a problem for many students. Cognitive difficulties. This article only makes a categorical analysis of common questions. A. Mercury overflows due to “inversion”. Example 1 Long L=1 0 0cm and one end closed