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In Fig. 21-41, three identical
Figure 21-41 Problem 48.
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- 48 In Fig. 21-41, three identical con- ducting spheres form an equilateral tri- angle of side length d= 20.0 cm. The sphere radii are much smaller than d, and the sphere charges are q4 = -2.00 nC, q = -4.00 nC, and qc = +8.00 nC. (a) What is the magnitude of the electro- static force between spheres A and C? The following steps are then taken: A and B are connected by a thin wire and then disconnected; B is grounded by the wire, and the wire is then removed; B and C are connected by the wire and then discon- nected. What now are the magnitudes of the electrostatic force (b) between spheres A and Cand (c) between spheres B and C? C. Figure 21-41 Problem 48.arrow_forwardProblem 21-60 (HW-21, Hint) In Fig., what are the (a) magnitude and (b) direction of the net electrostatic force on particle 4 due to the other three particles? All four particles are fixed in the xy plane, and qı = -3.20 x 101 C, q2 = +3.20 x 101 C, q3 = + 6.40 x 10*1º C, q4 = +3.20 x 101 C, q1 = 35.0°, di = 3.00 cm, and d2 = d3 = 2.00 cm. 9.3 SSMarrow_forward46 In Fig. 21-40, four particles are fixed along an x axis, separated by distances d = 2.00 cm. The charges are q1 = +2e, q2 - -e, q3 = +e, and q4 = +4e, with e = 1.60 x 10-19 Č. In unit-vector notation, what is the net electrostatic force on (a) particle 1 and (b) particle 2 due to the other particles? %3! Figure 21-40 Problem 46. %3Darrow_forward
- 3 In Fig. 21-11, the particles have charges q, = -92 = 300 nC and 93 = -q4 = 200 nC, and distance a = 5.0 cm. What are the (a) magnitude and (b) angle (relative to the +x direction) of the net force on particle 3? %3! a 3arrow_forward*7 In Fig. 21-23, three charged particles lie on an x axis. Particles 1 and 2 are fixed in place. Particle 3 is free to move, but the net elec- Figure 21-23 Problems 7 and 40. trostatic force on it from particles 1 and 2 happens to be zero. If L23 = L12, what is the ratio ql92? -L12 L-arrow_forwardIn Fig. 21-22, the particles have charges 91 = -92 = 137 nC and 93 = -94 = 148 nC, and distance a = 5.2 cm. (a) Find the net electrostatic force on particle 3: F net,3 = N (b) What is the vector sum of net electric forces acting on particle 1, 2, 3 and 4? Fnet, 1+ Fnet, 2 + Fnet,3 + Fnet,4 = N 3 a Fig. 21-22arrow_forward
- Figure 21-18 shows four situations in which particles of charge +q or -q are fixed in place. In each situation, the particles on the x axis are equidistant from the y axis. First, consider the middle particle in situation 1; the middle particle experiences an electrostatic force from each of the other two particles. (a) Are the magnitudes F of those forces the same or different? (b) Is the magnitude of the net force on the middle particle equal to, greater than, or less than 2F? (c) Do the x components of the two forces add or cancel? (d) Do their y components add or cancel? (e) Is the direction of the net force on the middle particle that of the canceling components or the adding components? (f) What is the direction of that net force? Now consider the remaining situations: What is the direction of the net force on the middle particle in (g) situation 2, (h) situation 3, and (i) situation 4? (In each situation, consider the symmetry of the charge distribution and determine the…arrow_forwardThree charged particles A B and C are placed on Y Axis. A and B are fixed. The particle C feels zero force when the ratio of distance dAB\ dBC =4.7.what is the ratio qA\qB (magnitude only)? A d AB В d BCarrow_forwardIn Fig. 21-20, a central particle of charge 2q is surrounded by a square array of charged particles, separated by either distance d or d/2 along the perimeter of the square. What are the magnitude and direc- tion of the net electrostatic force on the central particle due to the other particles? (Hint: Consideration of symmetry can greatly reduce the amount of work required here.)arrow_forward
- (a) Two insulated charged copper spheres A and B have their centers separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is 6.5 x 10-7 C? The radii of A and B are negligible compared to the distance ofarrow_forwardFour identical simple pendula consisting of light string of length I and small bob of mass m are suspended from common point of suspension. The bobs of pendula are given equal charge due to which each string makes 60° with downward vertical. Charge on each bob is 3mgl (a) V(2/2 +1)K 313mgl V(2/2+1)K 3mgl mgl? (/2+1)K (d)arrow_forwardThree identical conducting spheres denoted as X, Y, and Z are separated in space. They have initial net charges of −2Q, −3Q, and 5Q, respectively. Sphere Z is touched to X and separated, then touched to Y and separated. Upon reaching electrostatic equilibrium, what is the final net charge of Y?arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning