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Unformatted text preview: sanchez (es25396) – Homework 1 – Stone – (13730) 1 This printout should have 19 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A strong lightning bolt transfers about 23 C to Earth. How many electrons are transferred? The charge on an electron is 1 . 60218 × 10 19 C. 002 10.0 points 1) Two uncharged metal balls, X and Y , stand on glass rods and are touching. X Y 2) A third ball, carrying a negative charge, is brought near the first two. X Y 3) Then the first two balls are separated from each other, X Y 4) and the third ball is finally removed. X Y When this is all four steps are done, it is found out that 1. Balls Y and X are both negative. 2. Ball Y is positive and ball X is negative. 3. Balls Y and X are both positive. 4. Balls Y and X are still uncharged. 5. Ball Y is negative and ball X is positive. 003 10.0 points A molecule of DNA (deoxyribonucleic acid) lies along a straight line. It is 1 . 38 μ m long. The ends of the molecule become singly ion ized; negative on one end, positive on the other. The helical molecule acts as a spring and compresses 1 . 6% upon becoming charged. The Coulomb constant is 8 . 99 × 10 9 N · m 2 / C 2 ....
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 Spring '09
 Guevara
 Work, Light, Electric charge, Sanchez

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