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研究物理问题时,有时为了便于分析、讨论、计算,常常需要根据物理基本概念、原理、定律进行近似计算,或者在近似计算的基础上进行估算,从而对实际问题作一个恰如其分的解答.中学物理中的估算是对物理量的大致数值范围或数量级进行科学的推算.求解物理估算题有利于培养学生思维的敏捷性和简捷性,有利于培养学生运用物理知识解决实
When studying physical problems, sometimes it is often necessary to make approximate calculations based on basic concepts, principles and laws of physics, or to make estimates based on approximate calculations, so as to give a proper answer to practical problems in order to facilitate analysis, discussion and calculation. In the estimation of the physical quantities of the approximate numerical range or magnitude of scientific projections Solving physical evaluation questions help to develop the agility and simplicity of student thinking is conducive to training students to use physical knowledge to solve real