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homework 08

# homework 08 - chamarthy(ac36769 homework 08 Turner(56705...

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chamarthy (ac36769) – homework 08 – Turner – (56705) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A proton is accelerated through a potential difference of 3 . 5 × 10 6 V. a) How much kinetic energy has the proton acquired? Answer in units of J. 002 (part 2 of 2) 10.0 points b) If the proton started at rest, how fast is it moving? Answer in units of m / s. 003 10.0 points Points A (1 m, 4 m) and B (3 m, 7 m) are in a region where the electric field is uniform and given by vector E = E x ˆ ı + E y ˆ , where E x = 4 N / C and E y = 3 N / C. What is the potential difference V A - V B ? Answer in units of V. 004 10.0 points Consider a circular arc of constant linear charge density λ as shown below. x y 3 7 π + + + + + + + + + + + O r What is the potential V O at the origin O due to this arc? 1. V O = 0 2. V O = 5 32 λ ǫ 0 3. V O = 3 22 λ ǫ 0 4. V O = 5 24 λ ǫ 0 5. V O = 3 28 λ ǫ 0 6. V O = 3 14 λ ǫ 0 7. V O = 1 5 λ ǫ 0 8. V O = 5 28 λ ǫ 0 9. V O = 5 36 λ ǫ 0 10. V O = 1 7 λ ǫ 0 005 10.0 points

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