运用数学工具处理物理问题的能力是高考重点考查的五种能力之一,这其中包含了运用几何图形对物理问题进行表达、分析的能力。运用几何图形分析物理问题时,需要先将物理情景抽象成一个几何模型,再运用几何方法进行分析求解。下面以两圆相切模型在磁场问题中的运用为例,与同学们共勉。例1(2014年高考浙江卷)离子推进器是太空飞行器常用的动力系统,某种推进 The ability to use mathematical tools to deal with physical problems is one of the five competencies of the college entrance examination, which includes the ability to use geometry to express and analyze physical problems. The use of geometry to analyze physical problems, the need to abstract the physical scene into a geometric model, and then use the geometric methods for analysis and solution. The following two rounds of tangent model in the field of the use of magnetic problems, for example, and students alike. Example 1 (2014 college entrance examination in Zhejiang volume) Ion thruster is a commonly used spacecraft power system, a propulsion