gc textbook chapter 17 Electric Potential (id: 83a1e3dad)

本题目来源于试卷: gc textbook chapter 17 Electric Potential，类别为 通用国际物理

[填空题]
An alpha particle (which is a helmhorru2hj)ub.0 , k. gx7v- ynzbx9r )9:/k c0bv;: bawn llzwium nucleus, $Q=+2e$, $m\,=\,6.64\times10^{-27 }\,kg$) is emitted in a radioactive decay with $_{KE}$ = $5.53MeV$ What is its speed?    $ \times10^{7}\,m/s$

参考答案: 1.63±2%


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