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homework 03

# homework 03 - chamarthy(ac36769 homework 03 Turner(56705...

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chamarthy (ac36769) – homework 03 – Turner – (56705) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The diagram shows an isolated, positive charge Q , where point B is twice as far away from Q as point A . + Q A B 0 10 cm 20 cm The ratio of the electric field strength at point A to the electric field strength at point B is 1. E A E B = 2 1 . 2. E A E B = 1 1 . 3. E A E B = 8 1 . 4. E A E B = 1 2 . 5. E A E B = 4 1 . 002 (part 1 of 3) 10.0 points Consider the setup shown in the figure be- low, where the arc is a semicircle with radius r . The total charge Q is negative, and dis- tributed uniformly on the semicircle. The charge on a small segment with angle Δ θ is labeled Δ q . x y - - - - - - - - - - - - - - - - - - Δ θ θ r x y I II III IV B A O Δ q is given by 1. Δ q = 2 Q Δ θ π 2. Δ q = Q Δ θ π 3. Δ q = Q 2 π 4. Δ q = 2 Q π 5. Δ q = Q Δ θ 2 π 6. Δ q = 2 π Q 7. None of these 8. Δ q = Q 9. Δ q = π Q 10. Δ q = Q π 003 (part 2 of 3) 10.0 points The magnitude of the x

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