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 length L is u3f(z7p z6q1 pizx /jk7 je3xonnder o bbp o22r2ia)a*e zpcp20j6v tension T. The speed of a wave in the string is v. What will be the speed of a wave in b 2op)6 c*op2pib0raa2 jev2 zthe string if the length 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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