What energy transformations occur when fired from a pistol, and can a pistol be considered a heat engine?

When fired, the internal energy of gases is converted into kinetic energy of a bullet or projectile, so the pistol can be considered a heat engine.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.