Physics +8 Exam 2 Equation Sneet (Ch29-31) [C]-[F) - - current density, dir of ., w- cumber of e per volum collisiona. = avg. distance between collisions. of= cond. Derive equation for and Can using Al's 5 -6/26. . so E-air, between two pates. AF - charged parallel plate capacitor (depicted below with er poplied across the plains The battery is disconnected and onstant & Is inserted Find: al C before slab is inserted, ates and the slab, of _" inside thy dielectric blah of _!" go the (surface] charge on the dielectric