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在物理解题中,常会遇到这样一类问题:一物理量的变化与它相关的另一物理量的变化是成正比的.有时我们可以用 y=kx+b(k≠0)这一数学模型对该类物理现象进行精确而简洁的数学描述,以找出物理量间准确的数量关系.以下就是运用该函数解题的几个例子.例1:实验室有一只读数不准确的温度计,在测冰水混合物的温度时,其读数为20℃;在
In physical understanding questions, we often encounter such a problem: The change of a physical quantity is directly proportional to the change of another physical quantity related to it. Sometimes we can use the mathematical model of y=kx+b(k≠0). An accurate and concise mathematical description of this type of physical phenomenon is used to find the exact quantitative relationship between physical quantities. Here are a few examples of using this function to solve problems. Example 1: The laboratory has a thermometer with inaccurate readings. At the temperature of the ice-water mixture, the reading is 20°C;