PHYS 1007 Lecture Notes - Lecture 24: Isochoric Process, Isobaric Process, Internal Energy

• School: Carleton University
• Department: Physics
• Course: PHYS 1007
• Professor: John Armitage

Document Summary

First law connects increase in internal energy u with the heat absorbed q and the work done on the system w: u = q + w. W is the work (= -p(vf vi) W is posiive when work is done on the system. W is negaive when work is being done by the system. Q is provided by inducion, convecion or radiaion. Isovolumetric process (isochoric: w = 0, ( v = 0) Internal energy (mechanical part) measured by temperature, t. if t does not change then the internal energy is constant. Temperature, t measure of the average kineic energy of a molecule: average energy per molecules can be shown in two ways: Heat, q transfer of energy between one body and another. Internal energy, u total energy of all molecules. For a gas, u is just the sum of all kes. For solids, q = mc t: amount of heat to change temperature t.