Physics 40S Formulas 1314

fb i b ib cos fb qv b qvb cos circuits q

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Unformatted text preview: N ⋅m  Fe = 2  k = 9.0 x10  E =  E = 2 2 r C q r ! kq q PE kq  PEe = 1 2  V =  V = Ed  V = r q r Moving Charges in Magnetic Fields ! !! !! ! !! !!  FB = ℓI × B = ℓIB cosθ  FB = qv × B = qvB cosθ Circuits !q  I = t !  V = IR  R = ρ L A !  P = IV 1 1 1  = + + ... Req R1 R2 Electromagnetic Induction ! N ΔΦ  ξ = !! !! Δt  ξ = BLv  Φ = BA Medical Physics t ⎛ 1 ⎞ T1/2  N = N o ⎜ ⎟  E = Δmc 2 ⎝ 2⎠ Mass Object kg u electron 9.109 4 x 10-31 kg 0.000 548 58 proton 1.672 62 x 10-27 kg 1.007 276 neutron 1.674 93 x 10-27 kg 1.008 665 1  1 H atom 1.673 53 x 10-27 kg 1.007 825  1 e.c.=1.6x10 -19C 1 C = 6.25 x1018 e.c. !  Vab = ξ − Ir  Req = R1 + R2 + ...  Vs N s = Vp N p p 1u = 931.5 MeV 1u = 1.660 5 x 10-27 kg 1 eV = 1.602 2 x 10-19 J  4 He = 4.002 603 u 2...
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This document was uploaded on 04/05/2014.

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