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18) As shown in the figure, three charges are at corners of a rectangle. The charge in the bottom right corner is Q = - 90 nC, and all the other quantities are accurate to two significant figures. What is the magnitude of the net electrical force on Q due to the other two charges? (k=1/4лε0 = 9.0 × 109 N. m²/C2) A) 3.8 × 10-2 N B) 2.8 × 10-2 N C) 5.3 × 10-2 N D) 7.1 x 10-2 N 15 nC (+) -5nC 3 cm 1 cm 19) Four charged particles (two having a charge +Q and two having a charge -Q) are arranged in the xy-plane, as shown in the figure. These particles are all equidistant from the origin. The electric potential (relative to infinity) at point P on the z-axis due to these particles, is A) zero. B) positive. C) negative. D) impossible to determine based on the information given. + x +

18) As shown in the figure, three charges are at corners of a rectangle. The charge in the bottom right corner is Q = - 90 nC, and all the other quantities are accurate to two significant figures. What is the magnitude of the net electrical force on Q due to the other two charges? (k=1/4лε0 = 9.0 × 109 N. m²/C2) A) 3.8 × 10-2 N B) 2.8 × 10-2 N C) 5.3 × 10-2 N D) 7.1 x 10-2 N 15 nC (+) -5nC 3 cm 1 cm 19) Four charged particles (two having a charge +Q and two having a charge -Q) are arranged in the xy-plane, as shown in the figure. These particles are all equidistant from the origin. The electric potential (relative to infinity) at point P on the z-axis due to these particles, is A) zero. B) positive. C) negative. D) impossible to determine based on the information given. + x +

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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18) As shown in the figure, three charges are at corners of a rectangle. The charge in the bottom right corner is Q = - 90 nC, and all the other quantities are accurate to two significant figures. What is the magnitude of the net electrical force on Q due to the other two charges? (k=1/4лε0 = 9.0 × 109 N. m²/C2) A) 3.8 × 10-2 N B) 2.8 × 10-2 N C) 5.3 × 10-2 N D) 7.1 x 10-2 N 15 nC (+) -5nC 3 cm 1 cm 19) Four charged particles (two having a charge +Q and two having a charge -Q) are arranged in the xy-plane, as shown in the figure. These particles are all equidistant from the origin. The electric potential (relative to infinity) at point P on the z-axis due to these particles, is A) zero. B) positive. C) negative. D) impossible to determine based on the information given. + x +
Transcribed Image Text:18) As shown in the figure, three charges are at corners of a rectangle. The charge in the bottom right corner is Q = - 90 nC, and all the other quantities are accurate to two significant figures. What is the magnitude of the net electrical force on Q due to the other two charges? (k=1/4лε0 = 9.0 × 109 N. m²/C2) A) 3.8 × 10-2 N B) 2.8 × 10-2 N C) 5.3 × 10-2 N D) 7.1 x 10-2 N 15 nC (+) -5nC 3 cm 1 cm 19) Four charged particles (two having a charge +Q and two having a charge -Q) are arranged in the xy-plane, as shown in the figure. These particles are all equidistant from the origin. The electric potential (relative to infinity) at point P on the z-axis due to these particles, is A) zero. B) positive. C) negative. D) impossible to determine based on the information given. + x +
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