本题目来源于试卷: Motion of charged particle and Velocity selector and Mass spectrometer，类别为 美国物理杯赛(Physics Bowl)
[单选题]
97.28: An ion with charge q, mass :zkstcs m4.o+ m, and spe3,xdmv u/trzsu+ .l+ ted v enters a magnetic field B and is deflected into a+tl.rdzu v t3s/x +u,m path with a radius of curvature R. If a second ion has speed 2v, while m, q, and B are unchanged, what will be the radius of the second ion’s path?
A. is 4R
B. is 2R
C. is R
D. is R/2
E. is R/4
参考答案: B
本题详细解析:
暂无
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