本题目来源于试卷: Physics Unit17: Electric Potential，类别为 通用国际物理
[单选题]
A 4.0-g object carries j3q*-bdzu a4m b)iyx. *;qjxwa chargeh 1v53dzid*elc3sc 5e of 20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is ecdi *3c3 hds5 v1l5ezmoving at 2.0 m/s. What is the magnitude of the potential difference?
A. $800 \; kV$
B. $400 \; kV$
C. $800 \; V$
D. $400 \; V$
参考答案: D
本题详细解析:
暂无
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