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 and a prot80u2m /-j) zcaul/xbcbpp4z,s0 lzmu(axc y3ons8hk bnvm7uu4tkj ()8 are separated by a distance of 1.0 m. What happens to the size of the force on the proton ifnb vu7hkk4t) s8(mu8 j the electron is moved 0.50 m closer to the proton?
A. It increases to 4 times its original value.
B. It increases to 2 times its original value.
C. It decreases to one-half its original value.
D. It decreases to one-fourth its original value.
参考答案: A
本题详细解析:
暂无
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