gc textbook chapter 12 Sound (id: 4ea73b694)

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]
You have three tuning frt3h*v( :s yayix/5hr /zgm8rorks, A, B, and C. Fork B has a frequency of 441 un7 vh,ar) b48epj9;qty.mj xw6kk) v Hz; when A and B are sounded together, a beat frequency of 3 Hz is heard. When B and C are sounded together, the beat frequency is 4 Hz. What are thevpjw9ku)nqvy4;a), 7.ejrxtk bm8h6 possible frequencies of A and C? What beat frequencies are possible when A and C are sounded together?$f_A$ =    Hz or    Hz
$f_C$ =    Hz or    Hz
|$f_A$-$f_C$|    Hz or    Hz

参考答案:
空格1: {438|444}±2%  空格2: {438|444}±2%  空格3: {437|445}±2%  空格4: {437|445}±2%  空格5: {1|7}±2%  空格6: {1|7}±2% 


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