运用数学知识来解物理习题,解题过程要受物理意义的制约,若不顾物理条件的限制而一味追求习题答案的正确性,势必造成貌合神离的结果.现举一例.题目:1厘米~3的水里含有3.35×10~(22)个水分子,一个水分子的质量有多大?(现行初三物理课本 P27第1题)设1厘米~3的水的质量,体积分别为 m 和 V; Use mathematics knowledge to solve physical exercises. The process of solving problems must be restricted by physical meaning. If you ignore the limitations of physical conditions and blindly pursue the correctness of the exercises, it will inevitably result in discordant results. Now give an example. Title: 1cm~3 The water contains 3.35×10 22 water molecules. How large is the mass of a water molecule? (Currently the third physical textbook P27 Problem 1) sets the mass of 1 cm~3 water, and its volume is m and V respectively;