rentgenovskoe_izluchenie(1)
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ȼ. … |
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1) 90%; |
2) 40%; |
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4) 100%. |
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Ƚ. |
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1) |
= /ln2; |
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= ln2/N; |
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4) |
= t; |
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5) = Nln2. |
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1) |
= dN/N; |
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3) |
= -dN/T; |
4) |
= N0 dt.. |
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140 |
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8. Ⱥ. |
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3) |
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… |
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ȼ. |
1) |
= dN/N; |
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3) A = N0dt; |
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4) A = - T. |
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9. Ⱥ. |
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2) |
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Ɂɚɞɚɧɢɟ 5. |
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1. |
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: 3015 |
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3014Si + ? |
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1) 01 + ~ |
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2) -01 + ~ |
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3) 01 |
+ |
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4) |
-01 + |
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2. |
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, |
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10 |
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10000 |
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1) 0,06 |
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2) 16,7 |
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3) 167 |
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4) 6 106 . |
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3. |
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1 |
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=8 |
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16 |
? |
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1) 0,25 |
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2) 0,4 |
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3) 1/8 |
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4) 0,125 |
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