Page 123 - 高中物理选择性必修3
P. 123

1. ü 14 l÷4/Ê 14 %K¥,õÎmÑnOP?þwm"f%l÷û¥.
                   2. T 209 2kò% α OPZ,‡&‡3AïrÁ,MK α l÷óõ÷4Cª3A?
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                   3. õÕ 8   O %A1t¯Ì2 7 98 MeV, He %A1t¯Ì27 07 MeV. Â'yä
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              16                                                                 4 He,é³êy.Ìs?                      2
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               8  O=4 8 ·61c 8 ·j1,é³êy.Ìs?yäM=4 4 · 2
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                   4. !ST9•:1(,/û·Á±,+,ùü 12 016s%^è=[&q/016s                                                       8
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              2® u,Å 1 u = 1 660 565 5 × 10     -27  kg,ýò ΔE = Δmc z-:6sì… 1 u "#‚ÏÎ
              931 5 MeV%Ìs.
                   5. .‚ “ 01A34”%STþW&Ðxyÿ',¾j:
                   ( 1)1919 A,ØÙÚò α :1µ¶ÊA£PUVW61,¾A°fû¥/
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              f26§®7%'. ghj{xÕ7|A%7^æ4/ v = 3 30 × 10 m/ s,Õ7ÊA
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              %7^æ4/ v = 4 50 × 10 m/ s,¾jõÕ m = 14m .
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