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Unformatted text preview: 0.5T = 5 N (b) F v B F r F F v v Magnetic field is directed into the page.( ) (c) No, Because the magnetic force on a moving charge is perpendicular to the velocity of the charge, this force does no work on the charge and cannot increase its kinetic energy. (no change of kinetic energy ‐> no change of magnitude of the velocity) v2 r 2 v (200m / s ) 2 = = 200m r= a 200m / s 2 (d) (e) a = F = ma a= F 5N = = 200m / s 2 m 0.025 Or F = qvB(magnetic force), F = mv 2 mv ⇒ r = qvB = r qB mv 2 (centripetal force) r...
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This note was uploaded on 10/20/2011 for the course PHY 309L taught by Professor Sai during the Spring '08 term at University of Texas at Austin.

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