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.
Troy is used mostly in English and its language of origin is French. Troy's meaning is man from Troyes; foot soldier. The first name is either derived from the French surname, itself from the place name of Troyes in France, or else it could be from the Old Irish for 'foot soldier'.he Hawaiian Koi, the name Troi, the name Troix, the name Troye, and the name Troyton are derivatives of Troy. Troy is a classic favorite. Today it is still a popular baby name for boys, though it was in more widespread use previously.