Day 4: 2D Molecular Theory and Fire Syringe Lab

First we did a problem on work on copper if expanded by temperature change. We used Q = mcadeltaT and deltaE = Q - W.

White board work. delta E = 11.6kJ and W = 0.0162J

Next we worked on the 2D molecular theory.  We found pressure = 2mv/deltaT

White board work of derivation.

Then we applied P = F/A and used 1/2mv^2.

White board work, used pv = nrt and factored in 1/2mv^2.

Which lead us to v = sqrt(3kT/m)

White board work, final derivation v = sqrt(3kT/m)

Then we did Isotherm compression.

White board work, T goes up P stays same V goes down. Used p1v1 = p2v2 and some algebra to get Volume in T^3/2

Fire syringe lab data and work. Needed to find final Temperature of the syringe when lit.

White board work, measurements of lab and final temperature in K was estimated to be 663K, should be in the range of 451 degrees Fahrenheit or higher.

Summary:
Started with a copper expanansion problem with change in temperature and volume.
Explored the 2D molecular theory. velocity  = sqrt(3kT/m)
Explored Isothermal compression, found a constant C that lead us to V1T1^3/2 = V2T2^3/2