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Unformatted text preview: 3) At t=0 the value of a in cm is a) 0.500 b) 1.00 c) 2.00 d) 5.00 e) none of these Particle moves in a circle with radius a in the xy plane so, 1 F = m ( v 2 x + v 2 y ) /a, a = 100[2 × 1015 (3 2 + 4 2 ) × 10 12 / 1 . 00] cm = 5 cm 4) What is the next time in 108 s that ( x, y ) = ( a, 0) ? a) 6.28 b) 3.14 c) 1.57 d) 0.785 e) none of these The time is the period for 1 revolution, so, t = 2 πa/ q v 2 x + v 2 y , = 2 π (0 . 05) / 5 × 10 6 s = 6 . 28 × 108 s, ( a ) . 5) What is z in cm at this time? a) 62.8 b) 31.4 c) 15.7 d) 7.85 e) 0 z = z (0) + v z t, = 0 + 100[(5 . 00 × 10 6 )(6 . 28 × 108 )] cm, = 31 . 4 cm, ( b ) 2...
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 Fall '06
 YKim
 Electron, Charge, Mass, Electric charge, constant magnetic field, × B

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