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 under tension T. The speed of a wave inz-mn e :h8f12:4p 0+ ymem*)qwjbgy zm6h ygol c/wq/5gny9gnf 6p( zw;/sb rtthe string is v. What will be the speed of a wave in the string if the length is increased to 2L, with no chaq/y9/5wgp6zn( scw;g/b ntfr nge 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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