Physics Unit11: Vibrations and Waves (id: 462c39f8e)

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 and length L is under ten )ef3glj,-ou t w;6zdh/ rxrm1sion T. The speed of a 5y :yjfon4j .t q+w)cwwave in the string is v. What will be the speed of a wave in the string if the lec.ty4 )fj yjq: +w5wnongth is increased to 2L, with no change in mass?

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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