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热学是高中物理中重要的组成部分,知识较为复杂,日常学习中难度较大。在高中物理教材中,明确提出了物体内能就是内部分子势能和分子热运动的动能总和。本文着重从物体内能组成和物体内能变化情况进行探究,结合笔者自身的观点论述,把握物体内能的相关概念和影响因素,探究物体做功和内能变化存在的关系,结合实例予以分析。
Thermal science is an important part of high school physics, knowledge is more complex, and it is more difficult in daily learning. In the high school physics textbooks, it is clearly stated that the internal energy of an object is the sum of kinetic energy of internal molecular potential energy and molecular thermal motion. This article focuses on the analysis of the composition of internal energy and the change of internal energy in the object. Based on the author’s own point of view, it grasps the related concepts and influencing factors of the internal energy of the object, explores the relationship between the work done by the object and the change of the internal energy, and analyzes it with examples.