# Hw01 - Version PREVIEW Hw01 Ross(10219 This print-out...

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Version PREVIEW – Hw01 – Ross – (10219) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. Charge in Water 001 10.0 points You have 3 . 6 kg of water. One mole of water has a mass of 18 . 1 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: - 1 . 91644 × 10 8 C. Serway CP 15 11 002 (part 1 of 2) 10.0 points Three charges are arranged in a triangle as shown. + - + 0 . 342 m 0 . 753 m 5 . 57 nC - 3 . 24 nC 1 . 6 nC y x What is the net electrostatic force on the charge at the origin? The Coulomb constant is 8 . 98755 × 10 9 N · m 2 / C 2 . Correct answer: 1 . 3939 × 10 6 N. 003 (part 2 of 2) 10.0 points What is the direction of this force (as an angle between - 180 and 180 measured from the positive x -axis, with counterclockwise posi- tive)? Correct answer: - 95 . 8165 . Serway CP 15 15 004 10.0 points Two small metallic spheres, each of mass 0 . 19 g are suspended as pendulums by light strings from a common point as shown. The

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• Spring '10
• Physics, Charge, Correct Answer, Electric charge, 2 cm, 15 J, µC, 7◦

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