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]
An electron and a proton are separated by a distance of 1.0 m. What happf 9 raro:;w-eorgh9z p w+4i8tens to uqz0g-8dd txei(+ 6cb the size of the force on the proton if the electron is moved 0.50 m closer to the proton?(8gxe- u qdtz0cb6+ id
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:
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