![]() ![]() These observations lead to the following definition of heat: Heat is the spontaneous transfer of energy due to a temperature difference.Īs noted in Temperature, Kinetic Theory, and the Gas Laws, heat is often confused with temperature. The transfer of energy is caused by the temperature difference, and ceases once the temperatures are equal. No work is done by either object, because no force acts through a distance. If two objects at different temperatures are brought in contact with each other, energy is transferred from the hotter to the colder object until equilibrium is reached and the bodies reach thermal equilibrium (i.e., they are at the same temperature). We say that a thermal system has a certain internal energy: its internal energy is higher if the temperature is higher. We also saw in Temperature, Kinetic Theory, and the Gas Laws that temperature is proportional to the (average) kinetic energy of atoms and molecules. In Work, Energy, and Energy Resources, we defined work as force times distance and learned that work done on an object changes its kinetic energy. By the end of this section, you will be able to: ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |