本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field，类别为 国际高中通用物理
[单选题]
A 5.0-mC charge is placed at ,1q0 . khgoxnjthe 0 cm mark of a meter stick and a -4.0 mC ch5g/r.4id m,cow(u w1p 4tozrwarge is placed at the 50 cm mark. What is o w tr4r4uwoiw /mgcz5,d1p(.the electric field at the 30 cm mark?
A. $4.0 \times 10^{5} \; N/C$
B. $5.0 \times 10^{5} \; N/C$
C. $9.0 \times 10^{5} \; N/C$
D. $1.4 \times 10^{6} \; N/C$
参考答案: D
本题详细解析:
暂无
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