A suspended object A is attracted to a neutral wall. It's also attracted to a positively charged object B. Which of the following is true about object A? (a) It is uncharged. (b) It has a negative charge. (c)It has a positive charge. (d) It may be either charged or uncharged.

Given two charges, pick the one answer that is false.     If charge "A" is attracted to "B", then charge "B" is equally attracted to  "A"     If charge "A" is attracted to "B", then charge "B" is repelled from "A"     Minus and minus repel     Plus and minus attract     Plus and plus repel     The two charges act on one another no matter how far apart they are, all the way to infinity

(HW 1: Ch 20 Problem 20.15 A small metal bead, labeled A, has a charge of 28 nC. It is touched to metal bead B, initially neutral, so that the two beads share the 28 nC charge, but not necessarily equally. When the two beads are then placed 5.0 cm apart, the force between them is 4.8x10-4 N. Assume that A has a greater charge. Part A What is the charge qA and qв on the beads? Express your answer in nanocoulombs. IVE ΑΣΦ 9A.9B= 22.6,4.4 Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Provide Feedback ? nC 7 of 19 Review | Constants | Periodic Table Next >

Four identical metallic objects carry the following charges: +1.23, +6.89, -4.44, and -9.28 μC. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated. (a) What is the final charge on each object? (b) How many electrons (or protons) make up the final charge on each object? (a) Number i (b) Number IN Units Units

Ē₁ 0.400 m 2. (a) Place a charge of -7 µc at point P and find the magnitude and direction of the electric field at the location of q2 due to q1 and change at p. (b) Find the magnitude and direction of the force on 92. 10₂ E 0.500 m 0.300 m 92 x

Three balls, with charges of +4g, -2q, and -q, are equally spaced along a line. The spacing between neighboring balls is r. We can arrange the balls in three different ways, as shown in the figure. In each case, the balls are in an isolated region of space very far from anything else. Treat the balls as point charges. +4g -29 -2g 2 || 1 +4q -g +4q (a) Rank the arrangements according to their potential energy, from most positive to most negative. See if you can do this without explicitly calculating the potential energy in each case. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.) (b) Using q = 3.40 x 10-6 C and r = 35.0 cm, calculate the electrostatic potential energy in each of the cases above. 1: 2: 3:

The gecko is sticking upside down to a smooth ceiling. The remarkable adhesion might be due to static electricity. Gecko feet are covered with microscopic hairs. When these hairs rub against a surface, charges separate, with the hair developing a positive charge and negative charge forming below the surface. There is an attractive force between the separated charges. This is an effective means of adhering to a surface, but it comes at a cost: Two planes of charge are like two charged plates of a capacitor, which takes energy to charge. Doubling the amount of charge on each surface increases the attractive force, but also increases the energy required to separate the charge. Part A By what factor does this energy increase? (UElec){ (UElec); ΕΧΕΙ ΑΣΦ Submit Request Answer Provide Feedback ?

Other than their charges, two conducting spheres are identical. Sphere A has a charge of 2 μC and Sphere B has a charge of 8 µC. The spheres are brought into contact with each other. What is the charge on Sphere A after they are separated? Ο 0 μC Ο 3 μC Ο 5 μC Ο 10 μC

Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +6q. Sphere B carries a charge of -5g. Sphere C carries no net charge. Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Last, sphere C is touched to sphere B and separated from it. For the following questions, express your answers in terms of q. (a) How much charge ends up on sphere C? 0.5 (b) What is the total charge on the three spheres before they are allowed to touch each other? 0.25 (c) What is the total charge on the three spheres after they have touched? 0.375 Additional Materials M eBook JAN 12 tv MacBook Air DII 80 F7 F8 F6 esc F4 F5 F1 F2 F3 * 24 %

You are given three pith balls. When balls A and B are brought close together (far away from C), the two repel. When A and C are brought close together (far away from B), the two attract. When B and C are brought close together (far away from A), the two attract. Find four solutions for how A, B, and C could be charged (+, - or neutral) relative to one another.