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 andq+9-uv2 kdzk /dg ex-n lengthsjzy7bb/: a:f L is under tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if theja b:7/: bfyzs 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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