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.
[ 3 syll. ro-de-ric(k) , rod-eri-ck ] The baby boy name Roderick is pronounced as R AA D-eh-RihK â . Roderick is used predominantly in the English and German languages, and it is derived from Germanic origins. The name's meaning is famously powerful. A two-element name, it is derived from the elements ' hruod ' meaning fame; 'ric' rich, powerful, ruler. The name was introduced to England by Vikings in the Danelagh and later by Normans at the conquest. By the end of the medieval period, the name had fallen into disuse.