本题目来源于试卷: Electrostatic Force and Electric Field，类别为 美国物理杯赛(Physics Bowl)
[单选题]
13.29 Two electrons enter clgyv5 ( o8velu3 y4gd3dd 3m1a region between charged capacitor plates with eq ; t;xgflk/-a nual speed /fk;lnx-a;gt v. Electron A is directed horizontally to the left while electron B is directed at$30^{\circ}$below the horizontal. Each electron makes it to the left-hand plate. Which one of the following choices best compares the speeds of the charges ( $V_A$, $V_B$) upon arrival at the left plate? Consider only the electrons A and B’s interactions with the constant electric field between the plates, ignoring any relativistic effects.
A. $V_A>V_B$
B. $V_A=V_B$
C. $V_A<V_B$
D. The answer depends on the size of the plate separation d.
E. The answer depends on the magnitude of the charge Q on each plate.
参考答案: B
本题详细解析:
暂无
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