17_InstSolManual_PDF_Part13

# 17_InstSolManual_PDF_Part13 - Electric Charge and Electric...

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17.42. Set Up: For a point charge, is toward a negative charge and away from a positive charge. The two charges and their fields at each point are shown in Figures 17.42a-d. Figure 17.42 Solve: (a) and are in opposite directions, so the resultant electric field is zero. (b) The resultant electric field has magnitude 2660 N/C and is in the direction. (c) and makes an angle counterclockwise from the axis. (d) has magnitude 1380 N/C and is in the direction. 1 y E S E y 5 E 1 y 1 E 2 y 5 2 E 1 sin u 5 2 1 863 N / C 2 sin 53.1° 5 1380 N / C. E x 5 E 1 x 1 E 2 x 5 0. E 1 5 E 2 5 1 8.99 3 10 9 N # m 2 / C 2 2 6.00 3 10 2 9 C 1 0.250 m 2 2 5 863 N / C. u 5 53.1°. E 5 " E x 2 1 E y 2 5 526 N / C. 1 x 360° 2 75.7° 5 284° E S f 5 75.7° tan f 5 P E y E x P 5 3.92. E y 5 E 1 y 1 E 2 y 5 2 337 N / C 2 173 N / C 5 2 510 N / C. E x 5 E 1 x 1 E 2 x 5 0 1 130 N / C 5 1 130 N / C. E 2 y 5 2 E 2 sin u 5 2 173 N / C. E 2 x 5 E 2 cos u 5 130 N / C. u 5 53.1°. E 2 5 1 8.99 3 10 9 N # m 2 / C 2 2 6.00 3 10 2 9 C 1 0.500 m 2 2 5 216 N / C. E 1 y 5 2 337 N / C. E 1 x 5 0, E 1 5 1 8.99 3 10 9 N # m 2 / C 2 2 6.00
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Unformatted text preview: 3 10 2 9 C 1 0.400 m 2 2 5 337 N / C. 1 x E y 5 0. E x 5 E 1 x 1 E 2 x 5 E 1 1 E 2 5 2660 N / C. E 2 5 1 8.99 3 10 9 N # m 2 / C 2 2 6.00 3 10 2 9 C 1 0.450 m 2 2 5 266 N / C E 1 5 1 8.99 3 10 9 N # m 2 / C 2 2 6.00 3 10 2 9 C 1 0.150 m 2 2 5 2397 N / C E x 5 E y 5 E 5 0. E S 1 5 E S 2 E 1 5 E 2 x y E 1 E 2 q 1 q 2 0.15 m 0.15 m (a) E 2 E 1 0.15 m 0.15 m 0.15 m y x q 2 q 1 (b) (c) (d) 0.15 m x y E 1 x E 2 y E 1 E 2 q 1 q 2 0.15 m 0.50 m 0.40 m u u q 2 q 1 y x E 2 y E 2 x E 2 E 1 y E 1 x E 1 0.20 m 0.15 m 0.15 m 0.25 m u u u u E S E 5 k q r 2 . Electric Charge and Electric Field 17-13...
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