The internal energy is a state variable, just like the temperature or the pressure. The first law of thermodynamics defines the internal energy (E) as equal to the difference of the heat transfer (Q) into a system and the work (W) done by the system.E2 - E1 = Q-W We have emphasized the words into and by in the definition.hermodynamics is a branch of physics which deals with the energy and work of a system. Thermodynamics deals only with the large scale response of a system which we can observe and measure in experiments.
exists and is an alternate of . Meaning of Troy - What does the name Troy mean? Pronunciation: troi Gender: Boy Name Origin: English Name Meaning: Transferred use of the surname originating from the place-name Troyes in Aube, Normandy. Also, Troy means foot-soldier because of the invasion of Troyes, Greece.
Meaning of Troy. English name. In English, the name Troy means-Troy derives from the ancient Greek city of Troy; also from an Irish surname meaning soldier... Other origins for the name Troy include-English, Irish, Irish, French.The name Troy is most often used as a boy name or male name.English Name Meaning-Troy derives from the ancient Greek city of Troy; also from an Irish surname meaning soldier.. Origin-English. Alternate Origins-Irish Irish French.Expression num - 6.ther origins for the name Troy include-English, Irish, Irish, French.The name Troy is most often used as a boy name or male name. English Name Meaning-Troy derives from the ancient Greek city of Troy; also from an Irish surname meaning soldier.. Origin-English. Alternate Origins-Irish Irish French. Expression num - 6.