PH 205 Answers to assigned problems
| Chapter | Problem | Answer |
|
23 |
1 (a) |
2.62 x 1024 |
|
23 |
1 (b) |
2.38 electrons for every 109 already present |
|
23 |
2 (a) |
1.59 x10-9 N |
|
23 |
2 (b) |
1.29 x 10-45 N |
|
23 |
2 (c) |
8.61 x 10-11 C/kg |
|
23 |
6 (a) |
2.16 x 10-5 N |
|
23 |
6 (b) |
8.99 x 10-7 N |
|
23 |
8 |
0.634d |
|
23 |
13 |
d= 1.82m to the left of the -2.50 µC charge |
|
23 |
24 |
1.59 x 106 N/C |
|
23 |
33 |
-21.6 i MN/C |
|
23 |
36 (a) |
2.00 x 10-10 C |
|
23 |
36 (b) |
1.41 x 10-10 C |
|
23 |
36 (c) |
5.89 x 10-11 C |
|
23 |
41 electron: |
4.39 x 106 m/s |
|
23 |
41 proton: |
2.39 x 103 m/s |
|
23 |
50 (a) |
24.2 N/C |
|
23 |
50 (b) |
ER = 9.43 N/C; 63.5° above -x axis |
|
24 |
1 (a) |
858 N·m2/C |
|
24 |
1 (b) |
0 |
|
24 |
1 (c) |
657 N·m2/C |
|
24 |
10 (a) |
-55.6 nC |
|
24 |
10 (b) |
Negative charge spherically symmetric |
|
24 |
12 |
S1: -Q/epsilono |
|
24 |
14 |
Eo pi r2 |
|
24 |
23 (a) |
3.20 MN·m2/C |
|
24 |
23 (b) |
19.2 MN·m2/C |
|
24 |
23 (c) |
(a) would change; (b) would remain the same |
|
24 |
24 (a) |
761 nC |
|
24 |
24 (b) |
The net charge must be positive |
|
24 |
24 (c) |
The net charge would have the same magnitude but be negative |
|
24 |
26 |
2.33 x 1021 N/C |
|
24 |
31 (a) |
0 |
|
24 |
31 (b) |
7.19 MN/C |
|
24 |
36 (a) |
16.2 MN/C |
|
24 |
36 (b) |
8.09 MN/C |
|
24 |
36 (c) |
1.62 MN/C |
|
24 |
37 |
508 kN/C, upward |
|
24 |
38 |
1.15 nC/m2 |
|
24 |
44 (a) |
248 nC/m2 |
|
24 |
44 (b) |
496 nC/m2 |
|
24 |
58 (a) |
E = 0 |
|
24 |
58 (b) |
E = sigma/epsilono; toward the right |
|
24 |
58 (c) |
E = 0 |
|
25 |
3 (a) |
152 km/s |
|
25 |
3 (b) |
6.49 Mm/s |
|
25 |
7 |
1.67 MN/C |
|
25 |
16 (a) |
1.44 x 10-7 V |
|
25 |
16 (b) |
-7.19 x 10-8 V |
|
25 |
16 (c) |
-1.44 x 10-7 V; 7.19 x 10-8 V |
|
25 |
20 (a) |
-3.86 x 10-7 J |
|
25 |
20 (b) |
103 V |
|
25 |
37 |
Ex = -5 + 6xy |
|
25 |
42 |
-1.51 MV |
|
25 |
47 |
1.56 x 1012 electrons |
|
25 |
63 |
(- lambda / 2 pi epsilono) ln ( r2/r1) |
| 26 | See Physics department secure list | |
| 27 | See Physics department secure list | |
| 28 | See Physics department secure list | |
| 29 | See Physics department secure list | |
| 30 | See Physics department secure list | |
| 31 | See Physics department secure list | |
| 32 | 4 | 7.80 x 103 turns/m |
| 32 | 7 | (18.8 V) cos(377t) |
| 32 | 17 | (a) 0.139 s (b) 0.461 s |
| 32 | 19 | (a) 2.00 ms (b) 0.176 A (c) 1.50 A (d) 3.22 ms |
| 32 | 33 | 2.44 µJ |
| 32 | 35 | uE = 44.2 nJ/m3 uB = 995 µJ/m3 |
| 32 | 37 | (a) 20.0 W (b) 20.0 W (c) 0 (d) 20.0 J |
| 32 | 41 | 1.00 V |
| 32 | 50 | 0.281 H |
| 32 | 51 | 608 pF |
| 34 | 3 | 733 nT |
| 34 | 7 | (a) 0.333 µT (b) 0.628 µm (c) 7.78 x 1014 Hz |
| 34 | 13 | 307 µW/m2 |
| 34 | 21 | (a) 2.33 mT (b) 650 MW/m2 (c) 510 W |
| 34 | 39 | See Fig 34-17 and accompanying text |
| 34 | 41 | 5.45 x 1014 Hz |
| 34 | 44 | 60.0 km |
| 35 | 6 | (a) 4.74 x 1014 Hz (b) 422 nm (c) 200 Mm/s |
| 35 | 18 | air-oil, 30.4o oil-water, 22.3o |
| 35 | 25 | 0.171o |
| 35 | 35 | (a) 24.4o (b) 37.0o (c) 49.8o |
| 35 | 39 | 62.4o |