PHYS 2101 Lecture : Lecture34
Document Summary
Wednesday, april 18, 2012: hw 13 due monday night, of ce hours mwf 12:30-1:30, final exam: may 8 5:30-7:30pm. Temperature and heat: heat: the energy transferred between a system and its environment. System at temperature ts (for example, a glass of water) Environment at temperature te (for example, the room the glass is in) The environment is large, so we can consider it to be at constant temperature: if ts>te, the system will lose heat as it cools down (q<0, if ts0) When ts=te, the system is in equilibrium with its environment: if ts=te, no heat energy will be transferred (q=0) Work (w) - energy transferred to system via a force acting on it. Heat (q) thermal energy transferred to system: units: joules. Btu : the amount of heat that would raise the temperature of 1 lb of water from 63 f to 64 f.
