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C

.

.

.

.

= + 4p

,

B=m o (H+M)**

,

1=10-4

1=104

-

H

,

H

/

1=80/

1/=12,5

-

 

 

 

 

 

M=m/V

/3 *

M=m/V

/

1/3=1/

1/=1/3

-

4p
s=M/d


/*

moM**
s=M/d

,
2

1=10-4
1/=12/

1=10-4
12/=1/

m

*

m

2

1=10-3 2

12=103

V

3

V

3

13=10-63

 

d

/3

d

/3

1/3 =103/3

1/3=10-3/3

=BS

2 - .

=BS

2 - ,

1=10-8

1=108

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