Physics Unit12: Sound (id: 0087cf99a)

本题目来源于试卷: Physics Unit12: Sound，类别为 国际高中通用物理

[单选题]
Compared to the velocity of a 400 Hz sound, the ve0nwzs bq8 zu pt3c+5z.locity of a bcn)ui7*b n+s 200 Hz sound through air*bci +snbnu7) is

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

微信扫一扫，分享更方便