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]
The “alpenhorn” (Fig. 12–38) was once used to send signa9v o9sfr6f;nvla jj16 lsq je +cezkr,9ta c4u4fw)k)o u45cwx8 from one Alpine village to another. Since lower frequency sounds are less susceptible to intensity loss, long horns were used to create deep sounds. When played as a musical instrument, the alpenhorn must be blown in such a way that only one of the overtones i)rzqakeuc k+f4w c49w ,e4o5u)8xtj cs resonating. The most popular alpenhorn is about 3.4 m long, and it is called the F sharp (or G flat) horn. What is the fundamental frequency of this horn, and which overtone is close to F sharp? (See Table 12–3.) Model as an open tube.
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