4
I. .
.
II. , , .
- 1, ,
III. .
1. 0,15,30,45. , 1 2 3,
4, 5, 6. 7 2, 9 8. 13. 3 14 . 14 15, 16, 17. , 10 7 . 10 11 12.
2. 4 17.
3. 10 , 20 , 30 , 40 . 2).
4. , (,) 10.
5. : 
6. Δn F=10.
7. 10 : ε = Δn, - .
8. :
Δσ = E∙ε, =2 *105 .
9. .
10. .
IV.
1=
b = h=
():E = 2∙105
0
| F,H | ΔF,H | ||||||||||
| n1, | Δn1 | n2, | Δn2, | n3, | Δn3, | n4, | Δn4 | δ | δ | ||
15
|
|
|
| F,H | ΔF,H | ||||||||||
| n1, | Δn1 | n2, | Δn2, | n3, | Δn3, | n4, | Δn4 | δ | δ | ||
30
| F,H | ΔF,H | ||||||||||
| n1, | Δn1 | n2, | Δn2, | n3, | Δn3, | n4, | Δn4 | δ | δ | ||
45
| F,H | ΔF,H | ||||||||||
| n1, | Δn1 | n2, | Δn2, | n3, | Δn3, | n4, | Δn4 | δ | δ | ||
.
V.
VI.
1. ?
2. ?
3. ?
4. ?
5. ?
