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Electricity Ch1 HazemSakeek
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Electric Fields
1.1 Properties of Electric Charges 8
2.1 Charging Objects by Induction 11
3.1 Coulombs Law 16
4.1 The Electric Field 29
5.1
Electric Field of a Continuous Charge Distribution 37
6.1 Electric Field Lines 48
7.1
Motion of a Charged Particle in a Uniform Electric Field 54
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0100.15) b) (a . ( o0.73 s/m
) c (
) b) (a. (K S. 74
.d
vis/mk55.9= PG. 84
. 84.1P
.
mm72.1=R
.
) a . (
) b (
) c (
) d. ( E iv R
1
78
) e. (
. 84.1P
84.1P
. 05.4015s/m M .94
) a. (C/N30106.9
) b ( mc00.5
) c( . mc00.5
. mc00.5
www.trgma.com 88
1. (a), (c), (e)
2. (e)
3. (b)
4. (a)
5. A, B, C
1. (a) +1.60 10-19
C, 1.67 10-27
kg
(b) +1.60 10-19
C, 3.82 10-26
kg
(c) +1.60 10-19
C, 5.89 10-26
kg
(d) +3.20 10-19
C, 6.65 10-26
kg
(e) -4.80 10-19
C, 2.33 10-26
kg
(f) +6.40 10-19
C, 2.33 10-26
kg
(g) +1.12 10-18
C, 2.33 10-26
kg
(h) -1.60 10-19
C, 2.99 10-26
kg
3. 2.25 10-9
N/m
5. (a) 8.74 10-8
N (b) repulsive
7. (a) 1.60 10-9
N (b) 1.24 1036
times larger
(c) 8.62 10-11
C/kg
9. (a) 1.38 10-5
N (b) 77.5 below the negative x axis
11. (a) 0.951 m (b) yes, if the third bead has positive charge
13. 0.872 N at 330
15. (a) 8.24 10-8
N (b) 2.19 106 m/s
17.
1
89
19. (a) 2.16 10-5
N toward the other (b) 8.99 10-7
N away from the
other
21. 1.82 m to the left of the -2.50-mC charge
23. (a) 1.80 104 N/C to the right (b) 8.98 10
-5 N to the left
25.
27.
29. (a) 1.59 106 N/C (b) toward the rod
31. (a) 6.64 106 N/C (b) 2.41 10
7 N/C
(c) 6.39 106 N/C (d) 6.64 10
5 N/C
33. (a)
(b) to the left
35. (a) 2.16 107 N/C (b) to the left
39.
41. (a) -1/3 (b) q1 is negative, and q2 is positive.
43. 4.38 106 m/s for the electron; 2.39 10
3 m/s for the Proton
45. (a) 6.13 1010
m/s2 (b) 1.96 10
-5 s (c) 11.7 m (d) 1.20 10
-15 J
47. (a) K/ed (b) in the direction of the velocity of the electron
49. (a) 111 ns (b) 5.68 mm (c) (450i + 102j) km/s
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