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 an.l e 4*4 wq4nti nm7/hfot:zykd*u a0 c)jh24r8ltx dzm length 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 mass of the string is increased to 2m, with no change in lengj xrht4d8a c0*lmuz) 2th?
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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