- Arts & Culture 6204
- Business & Economics 676
- Computers 329
- Dictionaries & Encyclopedias 70
- Education & Science 76847
- Abstracts 73
- Astrology 4
- Biology 8
- Chemistry 3920
- Coursework 15556
- Culture 8
- Diplomas 316
- Drawings 1596
- Ecology 5
- Economy 81
- English 80
- Ethics, Aesthetics 3
- For Education Students 17651
- Foreign Languages 11
- Geography 3
- Geology 1
- History 88
- Maps & Atlases 5
- Mathematics 12624
- Musical Literature 2
- Pedagogics 19
- Philosophy 22
- Physics 15120
- Political Science 5
- Practical Work 59
- Psychology 65
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sociology 9
- Summaries, Cribs 87
- Test Answers 160
- Tests 8753
- Textbooks for Colleges and Universities 32
- Theses 7
- To Help Graduate Students 14
- To Help the Entrant 38
- Vetting 382
- Works 13
- Информатика 8
- Engineering 872
- Fiction 708
- House, Family & Entertainment 84
- Law 133
- Website Promotion 70
Task 30892.
Refunds: 0
Uploaded: 13.04.2014
Content: 30892.jpg 147,25 kB
Product description
The speed of the ordered movement of electrons in a wire changes with time according to the equation 4 * 10 ^ -5 * t, m / s. The specific resistance of the metal is 2.5 * 10 ^ -6 Ohm * cm, the concentration of free electrons is 2.5 * 10 ^ 23 cm ^ -3, the cross-sectional area of the wire is 5 mm ^ 2. Find: the charge that has passed through the cross-section of the wire in a time interval from 2 s to 4 s; the strength of the electric field E in the wire at a time equal to 2 s; time dependence of the specific thermal power of the current.
Additional information
Detailed solution with a short recording of the conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the solution, write. I try to help.
Feedback
0| Period | |||
| 1 month | 3 months | 12 months | |
| 0 | 0 | 0 | |
| 0 | 0 | 0 | |