以一個α粒子撞擊鈹產生核反應4He+9Be→12C+1n。它們的質量 4He為4.0026a.m.u.，9Be為9.0122a.m.u.，12C為12.0000a.m.u.，中子1n為1.0087a.m.u.(1a.m.u.=1.66×10-27公斤)。則反應後12C與中子之動能和比α粒子之入射動能約多出 (A)10-18焦耳 (B)10-12焦耳 (C)10-6焦耳 (D)104焦耳 (E)1011焦耳。[79日大]
範例:核反應定律與質能守恆[79日大]
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– 2010 年 05 月 14 日
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