MasteringPhysics: HW16- Google Chrome Secure https: session masteringphysics.com
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Question
MasteringPhysics: HW16- Google Chrome Secure https: session masteringphysics.com/myct/itemView?assignment Problem 72378239 04 PHY 1409 Section 04 Spring 2017 HW16 Problem 16.35 Problem 16.35 Part A Use Coulomb's law to determine the magnitude of the Determine the magnitude of the electric field at A electric field at points A and B in (Figure 1) due to the two Express your answer to two significant figures and include the appropriate units. positive charges (Q 5.5 pC) shown. Suppose that a 5.6 cm EA 2.25 10 Figure Submit My Answers Give Up Incorrect, Try Again, 5 attempts remaining B A Part B Determine the angle between the direction of the electric field at point A and the positive z-direction. Express your answer using two significant figures. 2a Submit My Answers Give Up Correct Ask me anything Signed in as Magda He Hel Resources previous l 6 of 17 I next 924 AM 9/2017 R20Explanation / Answer
A) electric field at A = 2 * 8.98 * 109 * 5.5 * 10-6 * sin26.56/0.12522
= 2.817 * 106 N/C
B) direction = 90 degree
C) X direction electric field = 8.98 * 109 * 5.5 * 10-6 * (cos45/0.0792 - cos18.43/0.1772)
= 4.1 * 106 N/C
Y direction electric field = 8.98 * 109 * 5.5 * 10-6 * (sin45/0.0792 + sin18.43/0.1772)
= 6.094 * 106 N/C
=> Net electric field = 7.34 * 106 N/C
D) Direction = tan-1(6.094/4.1)
= 56.06 degree