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高中物理中许许多多的物理过程都可以通过图象来进行描述,而且这种描述方法往往更加形象直观、物理内涵更为深刻丰富,其中有一类是利用物理图象所形成的各种图形的“面积”来求解的,采用这种“面积”方法来处理问题经常会收到事半功倍的效果。现举例说明这些形形色色的“面积”的妙用。一、v-t图象(速度-时间图象)的面积表示位移【例1】(上海市第11届高二物理竞赛初赛单选题第9题)如图1所示,有一个垂直于光滑水平面的有界匀强磁场,磁场宽度大于线圈边长,磁场的两
Many physical processes in high school physics can be described by images. Moreover, this description method is often more vivid and more profound in physics. One of them is to use various images formed by physical images “Area ” to solve, using this “area ” method to deal with the problem will often receive a multiplier effect. Now illustrate the magical effect of these various colors “area ”. First, the vt image (speed - time image) that the displacement of area [Example 1] (Shanghai 11th Senior High School Physics contest preliminary singles question 9) as shown in Figure 1, there is a vertical Bounded uniform strong magnetic field, magnetic field width greater than the length of the coil, the magnetic field of two