Physics Unit12: Sound (id: 94c47d91f)

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

[单选题]
Two tunes have frequencies of 440 H1 lvly*c)q9 v 9bdpdh+z and 444 Hz. What is the beat frequ6 k)u3gswyknv+o;t0 4i c/nvo ency?

A. $4 \; Hz$
B. $442 \; Hz$
C. $884 \; Hz$
D. none of the above


参考答案:  A


本题详细解析: 暂无

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