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Unformatted text preview: Ashley Katherine Thompson PHY 232 Spring 20 1 Set 01 (01/17) Due date: Wed Jan 17 23:59:00 2007 What is the total charge of the thorium nucleus? (The neutral thorium atom has 90 electrons.) You are correct. Your receipt is 1622768 What is the magnitude of its electric field at a distance of 8 . 38 10 10 m from the nucleus? You are correct. Your receipt is 1622397 What is the magnitude of the force on an electron at that distance? You are correct. Your receipt is 1622367 What would the magnitude of the force be if the distance of the electron from the nucleus were tripled? You are correct. Your receipt is 1622709 It is known that the electric force of repulsion between two electrons is much stronger than the gravitational attraction. For two electrons at a distance r apart, calculate the ratio of the size of the electrostatic repulsion to that of the gravita tional attraction. Use the following data: k = 8 . 99 10 9 Nm 2 /C 2 , e = 1 . 60 10 19 C, G = 6 . 67 10 11 Nm 2 /kg 2 , m e = 9 . 11 10 31 kg. You are correct. Your receipt is 1621983 Q Q 3 Q 1 R R 2 Three charges are arranged on a line as shown above. Choices: True , False . A. If Q 1 is negative, Q 2 is negative and Q 3 is positive, then Q 2 MUST feel a net force to the right. B. If Q 1 is positive, Q 2 is negative and Q 3 is negative, then Q 2 MUST feel a net force to the right. C. If Q 1 is positive, Q 2 is negative and Q 3 is positive, then Q 2 MIGHT feel a net force to the right....
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 Spring '06
 MR.Nagy
 Charge, Electrostatics

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