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]
A large negatively char kp..m5bm,mq: d,d fvk.0fz(g64tzs+a l/q emsr q7 qy4 fz*ivged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball+tqsm*q4v s6ef0 /yz z. fz4iq(rgl a7 touch the negative object. What is the final charge on each ball?
A. The first ball is positive, and the second ball is negative.
B. The first ball is negative, and the second ball is positive.
C. Both balls remain neutral.
D. Both balls are positive.
参考答案: A
本题详细解析:
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