本题目来源于试卷: 2011 美国F=ma物理竞赛 F=ma physics competition，类别为 美国物理杯赛(Physics Bowl)
[单选题]
You have 5 different strings with weights tied at various *2iq5cm c dis2o1 s*zn(jokz;point, all hanging e(ol 89z qhfb) xem-*rfrom the ceiling, and reaching down to the floor. The string is released at the top, allowing the weights to fall. Which one wil (b qm9r8e*el hx- )fozl create a regular, uniform beating sound as the weights hit the floor?
A.
B.
C.
D.
E.
参考答案: A
本题详细解析:
暂无
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