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. Wha3 khrf r( -rwczt6u5ktqjjtec*,(a7 +t han wk 8nv.;a;vu k(197oiw jiuappens to the size of the force on the proton if twu akv9.ji a 7n;ik1(8;unwo vhe 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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