熱力学の第一法則
Meanings
1
first law of thermodynamics
A fundamental principle in physics stating that energy cannot be created or destroyed, only transformed. Often contrasted with the second law.
See also: 熱力学第一法則 (ねつりきがくだいいちほうそく)
The first law of thermodynamics is a form of the law of conservation of energy.
To solve this problem, you need to apply the first law of thermodynamics.