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openvellum.ecollege.com 0 (114) Free Bird... Charley Pride Kis. jay z top 10 song. Course Home PHYS 212 - Fall 2018- PSU University Park Garcia | Course Home Mastering Physics PHYSICS ta HW02: Electric Fields Problem 23.35 8 of 12> Eberly College of Science 3 My Courses What are the strength and direction of the electric field at the position indicated by the dot in the figure(Figure 1)? Course Home Syllabus Assignments Scores Course Tools eText Study Area User Settings Part A Give your answer in component form. (Assume that 2-axis is horisontal and points to the right, and y-axis points upward.) Express your answer in terms of the unit vectors and 1. Express your answer using two significant figures. N/C Submit Previous Answers Request Answer Figure 1of XIncorrect; Try Again; 5 attempts remaining Part B IO nC 2.0 cm@-5.0 nC Give your answer as a magnitude and angle measured ow from the positive a-axis. Express your answer using two significant figures. 4.0 cm 5.0 nC N/C Submit

Explanation / Answer

E(+5) = (8.99E9)(5E-9)/(0.02^2) = (1.1E5i, 0j)

E(-5) = (8.99E9)(5E-9)/(0.02^2) = (0i, 2.8E4j)

r(+10) = SQR(0.02^2+0.04^2) = 0.0447

E(+10) = (8.99E9)(10E-9)/(0.0447^2) = 4.5E4

arctan(2/4)=26.57DEG

= (4.5E4sin(26.57)i, 4.5cos(26.57)j)

= (2.0E4i, -4.0E4j) E(+5) + E(-5) + E(10)

= (1.3E5i, -1.2E4j)
E(+5) + E(-5) + E(10) = (1.3E5i, -1.2E4j)

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