Three small balls, each of mass in are suspended separately from a common point by three silk threads, each of length 1. The balls are identically charged and hang at the corners of an equilateral triangle of side x. What is the charge on each ball?

Four point charges are held fixed in space on the corners of a rectangle with a length of 20 [cm] (in the horizontal direction) and a width of 10 [cm] (in the vertical direction). Starting with the top left corner and going clockwise, the charges are q1=+10 [nC] , q2=−10[nC] , q3=−5[nC] , and q4=+8[nC] .a) Find the magnitude and direction of the electric force on charge q4b) Find the magnitude and direction of the electric field at the midpoint between q3and q4c) Find the magnitude and direction of the electric field at the center of the rectangle.

Four identical metal spheres have charges of qA = -8.0 μC, qb=-2.0 μC, qc=+5.0 µC, and qp=+12.0 µC. (a) Two of the spheres are brought together so they touch, and then they are separated. Which spheres are they, if the final charge on each one is +5.0 μC? A and C V (b) In a similar manner, which three spheres are brought together and then separated, if the final charge on each of the three is +3.0 µC? A+B+D B+C+D A+B+D A+C+D A+B+C N = Number harge on each of the three separated spheres in part (b) is +3.0 µC. How many electrons would have to be added to one of to make it electrically neutral? i Units

Two small balls, each of mass 3.0 g, are attached to silk threads 30 cm long, which are in turn tied to the same point on the ceiling, as shown in the figure. When the balls are given the same charge Q, the threads hang at 0 = 3.0° to the vertical. What is the magnitude of Q?

Two identical, charged styrofoam balls are hung by threads from a ceiling, as shown in Figure 2. The balls each have a mass m = 425 g and the thread has a length of 30.0 cm. In equilibrium the angle 0 = 26.0°. What is the magnitude of the charge on each ball? (0) A q1 9₁ Enter your answer in 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 %

We wish to calculate the value of eo. Two small metal conducting balls of mass m, each with charge q, are attached to massless strings of length L and suspended from the ceiling. Since the balls are both positively charged, they repel each other, and so at the ceiling the strings make an angle 0 with each other. In terms of m, q, L, 0, and g, what is eo?

Spheres A, B and C have charges +8.0 C, +12.0 C, and -5.0 C, respectively. The three spheres are allowed to touch each other simultaneously and then separated. What is the total charge on the three spheres before and after touching each other?

Three charges are placed at the vertices of an equilateral triangle of side a= 0.85 m, as shown in the figure. Charges 1 and 3 are 8.2 μC charge 2 is -8.2 μC. Find the magnitude of the net force on charge 3 when it is at the origin. Express your answer using two significant figures.