本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 通用国际物理
[问答题]
If a string is vibrating v-td or mladl8+q b0n:4tqw .+i fuxxv2url4s+3x2ojp r)w3; fypm, -ln three segments, are there any places you could touch it2xll4rs23 wxfxo-+ up um pfyvj3,r) ; with a knife blade without disturbing the motion?
参考答案: The string could be touched at the location of a node without disturbing the motion, because the nodes do not move. A string vibrating in three segments has 2 nodes in addition to the ones at the ends. See the diagram.
本题详细解析:
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