本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
A doubly charged ion with fwh8xq,:f2q fr4ot r*;tsiys)-j.w a h.y(. eqn w6fd*)..z cnz vhgp .o/prpvelocity $6.9 \times 10^6 \; m/s$ moves in a path of radius 30 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?
A. $11 \times 10^{-27} \; kg$
B. $6.7 \times 10^{-27} \; kg$
C. $3.3 \times 10^{-27} \; kg$
D. $8.2 \times 10^{-27} \; kg$
参考答案: A
本题详细解析:
暂无
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