本题目来源于试卷: Physics Unit11: Vibrations and Waves，类别为 国际高中通用物理
[单选题]
A string of mass m anj*w75n,wau) (8 roc rzqxvm-pc5km**elr ;k q d length L is under tension T. The speed of a wave in thewod+:t 7eekb3ga7a-e string is v. What will be the speed of a wave in the string if the length is increased to 2L, with no change in m :3k7weod+e aget7a-b ass?
A. $0.5 \; v$
B. $0.71 \; v$
C. $1.4 \; v$
D. $2 \; v$
参考答案: C
本题详细解析:
暂无
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