gc textbook chapter 12 Sound (id: 1ba6b3c0a)

本题目来源于试卷: gc textbook chapter 12 Sound，类别为 通用国际物理

[填空题]
A piano tuner hears one beat evc*x;q:o+dgrt l9rk s. ery 2.0 s whep n ,vnq37nqz-n trying to adjust two strings, one of which is sounding 440 Hz. How far off in frequency is the other string? -zn7 pvq3,n nq±    Hz

参考答案: 0.5±2%


本题详细解析:

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