# Shared Flashcard Set

## Details

Physics - Electrostatics
MCAT
17
Physics
06/25/2012

Term
 Elementary Charge
Definition
 e = 1.6 x 10-19 C C- coulombs
Term
 def of ionized
Definition
 when neutral atom has e- added or removed
Term
 cation vrs. anion
Definition
 cation: postive anion: neg
Term
 eq. for quantized charge:
Definition
 q = n(±e) n-whole #
Term
 Coulumbs Law: and consequence of FE pos and neg
Definition
 FE = k (q1q2/r2)   FE - e- force between two charge particles. if pos value repel, neg attract k- proportionality constant: 9x109 Nm2/C2 q1 & q2 - particles r- distance
Term
 Force of gravitattion between two objects.
Definition
 FG= G (Mm/r2)   G= 6.7x10-11 Nm2/kg2
Term
 Principle of Superposition
Definition
 net e- force on charge (q) due to collection of other charges (Q's) is equal to sum of individ forces of each Q on q
Term
 source charge
Definition
 charges creating electric feild
Term
 in what direction do electric field vetors point in relation to postive and neg charges
Definition
 towards neg charges and away from pos ones
Term
 Electric Feild eq. concequence of E being (+) or (-)
Definition
 EbyQ = k(Q/r2) E: electric field, pos value means Q pos mean vector away, neg value means Q neg means vector towards r: space between Q and where vector goes to k: 9x109 Nm2/C2
Term
 Electric Force and Feild eq.
Definition
 Fonq= qE E: electric feild q: charge that feels force
Term
 electric dipole
Definition
 pair of equal but opposite charges
Term
 dielectric
Definition
 another name for insulator
Term
 Electric Potential eq.
Definition
 Φ = k (Q/r) k=9 x 109 Nm2/C2 Φ: scalar value (volt)[V]
Term
 change in electric potential eq.
Definition
 ΔPE = qΔΦ = qV
Term
 Work done by electric feild eq.
Definition
 Wbyelectricfeild = - ΔPEelec = -qV = -qΔΦ
Term
 relation between kinetic and potential energy
Definition
 ΔKE = - ΔPE
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