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12. A point charge (Q = +20e) sits at the origin and another point charge (q = -5e) sits at x = 3mm. In which region could you locate a point on the x axis where E = 0? A) Region I B) Region II C) Region III D) Regions I and III E) Nowhere ReganT PegianI Regin

12. A point charge (Q = +20e) sits at the origin and another point charge (q = -5e) sits at x = 3mm. In which region could you locate a point on the x axis where E = 0? A) Region I B) Region II C) Region III D) Regions I and III E) Nowhere ReganT PegianI Regin

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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12. A point charge (Q = +20e) sits at the origin and another point charge (q = -5e) sits at x = 3mm. In which region could you locate a point on the x axis where E = 0? A) Region I B) Region I1 C) Region III D) Regions I and III E) Nowhere Regon I Pegisn Regin I 13. Two electrons are located at (-10,0)cm and (10,0)cm, respectively. What is the electric field at observation point P (0,10)cm? A) -1.02•10-7 f V/m B) 1.02 10-7 f V/m C) 1.44 10-7j V/m D) -1.44•10-7j V/m E) -7.20•10-8jV/m 14. Twelve electrons are arranged like the numbers on a clock, as shown. Each electron is 4um from the center of the circle, and the spacing between electrons is the same. What is the magnitude of the electric field and the electric potential at the observation point P at the center? e. A) B) C) D) E) Impossible without knowing how far apart the electrons are from each other V 1080V/m OV/m 1080V/m OV/m -4.3mV -4.3mV oV ov 15. Two small metal spheres, each with the same charge Q, are separated by a center-to-center distance d; a student measures the Coulomb force to be 8N, Then. the spheres are replaced with spheres that have 2Q on them, and the distance between them is doubled. What Coulomb force will the student measure? B) 8N A) 16N C) 32N D) 4N E) 2N MacBook Pro FS F3 F4 F7 24 #3 & 4 7 W E R Y U G K L
Transcribed Image Text:12. A point charge (Q = +20e) sits at the origin and another point charge (q = -5e) sits at x = 3mm. In which region could you locate a point on the x axis where E = 0? A) Region I B) Region I1 C) Region III D) Regions I and III E) Nowhere Regon I Pegisn Regin I 13. Two electrons are located at (-10,0)cm and (10,0)cm, respectively. What is the electric field at observation point P (0,10)cm? A) -1.02•10-7 f V/m B) 1.02 10-7 f V/m C) 1.44 10-7j V/m D) -1.44•10-7j V/m E) -7.20•10-8jV/m 14. Twelve electrons are arranged like the numbers on a clock, as shown. Each electron is 4um from the center of the circle, and the spacing between electrons is the same. What is the magnitude of the electric field and the electric potential at the observation point P at the center? e. A) B) C) D) E) Impossible without knowing how far apart the electrons are from each other V 1080V/m OV/m 1080V/m OV/m -4.3mV -4.3mV oV ov 15. Two small metal spheres, each with the same charge Q, are separated by a center-to-center distance d; a student measures the Coulomb force to be 8N, Then. the spheres are replaced with spheres that have 2Q on them, and the distance between them is doubled. What Coulomb force will the student measure? B) 8N A) 16N C) 32N D) 4N E) 2N MacBook Pro FS F3 F4 F7 24 #3 & 4 7 W E R Y U G K L
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