gc textbook chapter 7 Linear Momentum (id: 1ea9f8d5b)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理

[填空题]
An atomic nucleus initially movi1(hh3 3ojvcp ing at 420m/s emiykdv,a9g+i/lvn* ao*v,vl r j61u kg; ts an alpha particle in the direction of its velocity, and the remaining nucleus slows to 350m/s If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u, vldja+novvk* 6u *9iklg,a1g;y/,rv what speed does the alpha particle have when it is emitted?    m/s

参考答案: 4200±2%


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