PHY 7A - Formula Sheet for Physics 7A Final Exam, Winter...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Formula Sheet for Physics 7A Final Exam, Winter 2008 Equations: Temperature change: Δ T = Q/C Phase change : Δ m = Q/ Δ H Thermal energy: Δ E th = C Δ T = mc m Δ T = nc n Δ T Bond Energy: Δ E bond = ±| Δ m × (heat of the phase change, Δ H ) | Gravitational PE: Δ PE g = mg E Δ y Translational KE: Δ KE = 1 2 m Δ v 2 = 1 2 m ( v 2 f - v 2 i ) Spring-mass PE: Δ PE spring - mass = 1 2 k Δ x 2 = 1 2 k ( x 2 f - x 2 i ) Force: | F | = | d ( PE ) /dr | Particle model of bond energy: E bond = all pairs ( PE pair - wise ) = # NN ( - ± )+# NNN ( PE NNN )+. .. Particle model of thermal energy: E thermal (total) = (total number of active modes) × (1 / 2) k B T OR: E thermal (total) = (number of active modes per particle) × (number of moles) × N A × 1 2 k B T For an ideal gas: Δ U = Δ E thermal Average in a L-J potential (two particles): PE AV E = E bond + 1 2 E th ; KE AV E = 1 2 E th C V = dE thermal /dT, C p = C V + pdV/dT (= C V + R , for ideal gas) c vm = C V /n = (number of active modes per particle)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/13/2010 for the course PHY 7A 56192 taught by Professor ? during the Winter '09 term at UC Davis.

Ask a homework question - tutors are online