HW_1112_2 - charged to -20 nC, is at the (x,y)=(0.0 cm, 2.0...

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Physics 1112 Homework 2 (due: February 10) 1. Two identical metal spheres A and B are connected by a metal rod. Both are initially neutral. 1x10 12 electrons are added to sphere A, then the connecting rod is removed. Afterward, what are the charge of A and the charge of B? 2. Two small plastic spheres each have a charge of -50 nC. They are placed 2.0 cm apart. What is the magnitude of the electric force between the spheres? 3. A small plastic sphere with a charge of -5.0 nC is near another small plastic sphere with a charge of -12 nC. If the spheres repel one another with a force of magnitude 8.0x10 -4 N, what is the distance between the spheres? 4. What are the magnitude and direction of the electric force on charge A. 5. Object A, which has been charged to +10 nC, is at the origin. Object B, which has been
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Unformatted text preview: charged to -20 nC, is at the (x,y)=(0.0 cm, 2.0 cm). What are the magnitude and direction of the electric force on each object? 6. What magnitude charge creates a 1.0 N/C electric field at a point 1.0 m away? A B C 1 cm 2 cm 1.0 nC 1.0 nC 4.0 nC 7. A +10 nC charge is located at the origin. What are the strengths of the electric field at the positions (x,y) = (5.0 cm, 0.0 cm) and (5.0 cm, 5.0 cm)? 8. What are the strength and direction of an electric field that will balance the weight of a 1.0 g plastic sphere that has been charged to -3.0 nC? 9. What is the strength of the electric field at point P? P 5 cm 1.0 nC 1.0 nC 5 cm...
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HW_1112_2 - charged to -20 nC, is at the (x,y)=(0.0 cm, 2.0...

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