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As Shown in the Figure,three Charges Are at Corners of a Rectangle.The

Question 20

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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 exerted on Q by the other two charges? (k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2) 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 exerted on Q by the other two charges? (k = 1/4πε<sub>0</sub> = 9.0 × 10<sup>9</sup> N ∙ m<sup>2</sup>/C<sup>2</sup>) A) 3.8 × 10<sup>-2</sup> N B) 2.8 × 10<sup>-2</sup> N C) 5.3 × 10<sup>-2</sup> N D) 7.1 × 10<sup>-2</sup> N


A) 3.8 × 10-2 N
B) 2.8 × 10-2 N
C) 5.3 × 10-2 N
D) 7.1 × 10-2 N

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