【Daily Question】Theoretical Foundation 2021.1.25
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Multiple-choice question: The question is shown in the image ( ). Answer: B. Hint: An additional reward will be given to those who can explain the solution process; the answer can be submitted there
The correct answer is B. The energy of system matter includes macroscopic mechanical energy and microscopic mechanical energy. Internal energy is a form of microscopic energy of matter, including molecular kinetic energy, molecular potential energy, chemical energy, and nuclear atomic energy ； External macroscopic mechanical energy includes the macroscopic kinetic energy and macroscopic potential energy of matter. The gravitational potential energy at a certain height belongs to external energy.
(B) Height potential energy in a gravitational field