本题目来源于试卷: Fields D.2 Electromagnetic Fields & Potential，类别为 IB物理学
[单选题]
Estimate the speed of an alpha particle that has acceli97 ) obpqbw:/d7cqivd0 z8k perated /o.0az4 ymk1njs o5u7lrlog -from rest in a uniform ele-y5o4rl u0/on gszl7 k1om. ajctric field E=50 $^{−1}$ over a distance of 2.0m.
A. $0.5\times10^4\,ms^{−1}$
B. $5.0\times10^4\,ms^{−1}$
C. $0.5\times10^5\,ms^{−1}$
D. $0.5\times10^9\,ms^{−1}$
参考答案: B
本题详细解析:
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