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# solution_pdf - henry(kah2922 – CH 15a Elec Forces&...

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Unformatted text preview: henry (kah2922) – CH 15a - Elec. Forces & Fields – visscher – (1288) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. Due Thursday 11 PM 001 10.0 points A sphere is charged with electrons to- 5 × 10 − 6 C. The charge of an electron is- 1 . 6 × 10 − 19 C. How many electrons are there on the sphere? Correct answer: 3 . 125 × 10 13 . Explanation: Let : q =- 5 × 10 − 6 C and q e =- 1 . 6 × 10 − 19 C . The total charge is q = nq e n = q q e =- 5 × 10 − 6 C- 1 . 6 × 10 − 19 C = 3 . 125 × 10 13 . 002 10.0 points You have 1 . 6 kg of water. One mole of water has a mass of 17 . 9 g / mol and each molecule of water contains 10 electrons since water is H 2 O. What is the total electron charge contained in this volume of water? Correct answer:- 8 . 61266 × 10 7 C. Explanation: Let : N A = 6 . 02214 × 10 23 molec / mol , q e =- 1 . 6 × 10 − 19 C / electron , m = 1 . 6 kg ,...
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solution_pdf - henry(kah2922 – CH 15a Elec Forces&...

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