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gc textbook chapter 12 Sound (id: 2d7ddcd41)

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admin 发表于 2025-1-19 21:04:24 | 显示全部楼层 |阅读模式
本题目来源于试卷: gc textbook chapter 12 Sound,类别为 通用国际物理

[问答题]
Consider the two waves gh7q4 yrn(xm +shown in Fig. 12–31. Ez34fvtxvt6(uu;xjj.o 69p u7qtwi y5 ach wave can be thought of as a superposition of two sound waves with slightly different frequencies, as in Fig. 12–18. In which of txxuiw63yj4ou tp9.z6 5 qt;u(j7 v vfthe waves, (a) or (b), are the two component frequencies farther apart? Explain.
(12-31)
(12-18)




参考答案:
From the two waves shown, it is seen that the frequency of beating is higher in Figure (a) – the beats occur more frequently.  The beat frequency is the difference between the two component frequencies, and so since (a) has a higher beat frequency, the component frequencies are further apart in (a).


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