Reflection and Refraction (id: 9623c0ab3)

本题目来源于试卷: Reflection and Refraction，类别为 美国物理杯赛(Physics Bowl)

[单选题]
98.04: As sound travels f-krew8 y k1ix5rom steel into airk3jc.nxu u2)z , both its speed and its:

A. wavelength increase
B. wavelength decrease.
C. frequency increase.
D. frequency decrease.
E. frequency remain unchanged.


参考答案:  B


本题详细解析: 暂无

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