Transcript

Obrazac za zadatke

2012/2013. .

VIII

27. 28. 04. 2013.

,

1. ( 1) 3, , . : R3 = R1 + R2, 1 V. (20 )

2. , a = 50 mm b = 100 mm ( 2). d = 0,05 mm, r1 = 7 ( 1) r2 = 4,5 ( 2). (). (B). , ( ). kr1 = 120 kV/cm kr2 = 80 kV/cm. . (20 )

3. . u, p ? (20 )

4. , , v1 = 500 m/s, , , v2 = 400 m/s. = 353 K. ( ) 1/3 . ? 120 J/kgK. (20 )

5. a, m, F . , , . . a F. . .

(20 )

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4

6

8

10

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VIII

27. 28. 04. 2013.

,

1. , , b , 0 V (5 ). .. : (3 ), (2 ). (3 ), , (2 ). 1 V, 1 V (5 ).

2. I : , , . , , , = 6,2 nF, 3,98 nF (5), 2,42 nF (3). , (5) 4,84 nF (2). . (), , , , . , (, (5)

II : , . . , , , , . (, .

3. , (2 ) (3 ) ( ), , , = (2 ) (3 ). (2 ), (2 ) 2 (4 ). 50 % (2 ).

4. , : (5 ). , (3 ) . : (2 ), 125 (5 ). : 478 = 205 (5 ).

5. , (3)

:

(4), (3),

(7) .

: (3),

(3).

(4)

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