Physics Unit12: Sound (id: 0087cf99a)

本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理

[单选题]
Compared to the velocity of a 400 Hz soun72,8egvus 3 fqdppzs)erkm: ;d, thz .z 5m8y8:b qrxgr(zee velocity of a 200 Hz sound through air is r(8xbyz8 m:5grqzz.e

A. twice as great.
B. the same.
C. one-half as great.
D. none of the above


参考答案:  B


本题详细解析: 暂无

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