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35.

35. II Pennies today are copper-covered zinc, but older pennies are 3.1 g of solid copper. What are the total positive charge and total negative charge in a solid copper penny that is electrically neutral?45. II What is the force F on the 1.0 nC charge at the bottom in FIGURE P22.45? Give your answer in component form. -6.0 nC -6.0 nC 2.0 nC - - - - - - 2.0 nC 2.0 nC - - - - - -2.0 nC + + + 5.0 cm * 459 459 5.0 cm 5.0 cm* 4501 4 5.0 cm + + 1.0 nC 1.0 nC FIGURE P22.45 FIGURE P22.4663. Il What are the electric fields at points 1, 2, and 3 in FIGURE P22.63? Give your answer in component form. 1 2 2.0 cm 5.0 nC 3.0 cm I + . 2 1.0 cm - 2.0 cm 4.0 cm -10 nC . 3 FIGURE P22.63 FIGURE P22.6465. III A 10.0 nC charge is located at position (x, y) = (1.0 cm, 2.0 cm). At what (x, y) position(s) is the electric field a. -225,000 i N/C? b. (161,000 7 + 80,500 j ) N/C? c. (21,600 7 - 28,800 j ) N/C?73. III Two 3.0 g point charges on 1.0-m-long threads repel each other after being equally charged, as shown in FIGURE CP22.73. What is the magnitude of the charge q? FIGURE CP22.73