Physics Unit16: Electric Charge and Electric Field (id: 38c02f46b)

本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field，类别为 通用国际物理

[单选题]
The force between a gn- *ndw(+ .y6t9g7hxvhfhfr n b-q:( qh0rjz2a jcb+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

A. $1.9 \; m$
B. $2.3 \; m$
C. $3.7 \; m$
D. $4.2 \; m$


参考答案:  C


本题详细解析: 暂无

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