--> . 11

 

>> 11 . .

5. .

 


()

2. ,

    = B⊥S = BS cos α.

,

( ) S α :

    = BS cos α.

() . , . 1 1 1 2, . 1 = 1 1 2.

3. 10 2 , .

    ) , : ; .
    ) ?
    ) ?

, .

.

4. , . : () ?

    ) , .
    ) , .
    ) .
    ) , .
    ) , .
    ) , .

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