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 a844wpbpzrv-iw-)f s(s0d ka py:zu5 knd lengt/;3t x cggg l,tum-jx8h 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 the matx 3,xu 8c;jm-g gltg/ss 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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