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Final

PCS 211 Final: Chapter 29 Premium

6 Pages
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Department
Physics
Course Code
PCS 211
Professor
Alexandre Douplik

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Description
• • • • • 29.1 T•e ma•netic•fiel• • Chapter 29 Magnetic Fields F prFduct) terms of the magnetic Magnetic fieldside a magnet, andegmratnps.eeanzetauththape,oles,field. | = qvBsins ▯ to both . ▯ = B B qv is thB direction in which the north pole of a and is a vector, (like B is defined in v (cross at that location. Magnetic field lines are ). q F continue inside the ▯ v B (2) (1)Difference bet• een • 1 T = 10on non-SmeUteri: b/m • diantioagendetemeiniecbyonhef“the force can bF F onpaamtiveelecdirTctionloftieforce is always in thece only acts = 0, ifis on a moving charged particle. ▯ tesla to 4 T B G = , it iB also called weber per square . m Wb )2 || 2 v charged particle. = . (sin E E C ; The magnetic force Right-Hand Rule m N ▯ gausss = 0) B = : (G),A m N ”. (a) (a) Clculnetnifallisg.5eicasrce.wn.3) a CalculFt= th= acFeleration of▯the proton. chbutsteady a magnetic force, is in the +z direis2.8 (1.6=z direction.10 a ▯ qvB m/s along the x axis. The speed = 10 10 B pm F ▯ ▯ sin can only change the = 12 19 ▯ 1.62.8 N )(8 ▯ ▯ ▯ 10 10 10 F 27 12 m6 speed • kg N / ds )(2.5 = 1.7 ordir(ction T kinetic energy ▯ )(sin60 v v 10 dt 15 60 of=the velocity vector, / ° ° +e 0 s2 ) F z . Therefore, a B of the y v the proton.Tl,e The periAngular frequence: totF aA chargeorkarineomnohespnaiclrbe teofelplase.is = m qBr F Motion of a Charged Particle In a Magnetic Field = =( : A proton is moving in a circular orbit of radius 14 cm. . ▯ = ▯ to the velocity of proton. Find the orbital speed of 10 r mv ▯ T ▯ 2 . C19 = = nd ▯to the velocity of the particle. 67 )( v ▯ r v Law: ▯ . r =qB 10 35 =2 m 27T ▯ ▯ kg 14 = ▯ qB ▯ changes the direction of v, but 10 m ▯ m2 ) v = 7 v F ▯ F q > 0 10 ▯ m6 to B. / F s v a ctargetisl el29.3o-magnetic force ( paralleloaagediparticleagneiigfavldlmco • • In theMagApplications Involving Charged Particles Moving in a▯v ||th a radius (velocity component perpendicular to F = qE + qv ▯ B = mv called the Lorentz force) acting on qB ▯ . B E ) remains constant. and magnetic filed ) produce a circular , Mass/cm/q = rBtm/q = rBMass Sectromete h:rough a velocity selector. Velocity Selector: Only charged particles with the 0 v= E/B B/E /v
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