Physics Unit11: Vibrations and Waves (id: 864995ea3)

本题目来源于试卷: Physics Unit11: Vibrations and Waves，类别为 通用国际物理

[单选题]
A string of mass m and lengtzyux n7 j7)u4yh L is under ten/n*, ce hjqg5psion T. The speed of a wave in the string is v. What will be the speed of a wav5/qh,gj cep*n e in the string if the mass of the string is increased to 2m, with no change in length?

A. $0.5 \; v$
B. $0.71 \; v$
C. $1.4 \; v$
D. $2 \; v$


参考答案:  B


本题详细解析: 暂无

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