Physics Unit16: Electric Charge and Electric Field (id: 2ace3763a)

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]
An electron is held up against kw)sz2seg l-p1 +zib yn):un3t+d7y/l h+r6amc;cd fxhe force of gravity by the attraction of a fixed proton some dc+hd / rc;y xlm7f+ad6istance above it. How far above the electron is the proton?

A. $1.5 \; m$
B. $2.3 \; m$
C. $3.7 \; m$
D. $5.1 \; m$


参考答案:  D


本题详细解析: 暂无

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