Physics is a difficult subject that requires learners to have logical thinking, in which exercises play an important role in forming and developing students’ thinking
Helps students review, deepen and expand their knowledge. However, in the process of doing physics exercises, many students often encounter difficulties in not being able to find methods to solve problems and not being able to apply the theoretical knowledge they have learned to the exercises. Therefore, with the desire to have a simple and easy-to-understand teaching method so that general students can absorb and self-study physics more easily, after each lesson, the lecturer needs to provide a general method bout how to solve that part’s exercises. This article introduces the method of solving heat exercises in part II principles of thermodynamics of general physics.