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]
Figure 12–32 shows various positions of a 4d-q1mpx2 wpb child in motion on a swing. A moni x8mb oq ka8f/)tor is blowing a whistle in front of the child on the ground. At which position, A through E, will the child hear the highest frequency for the sound of the whistle? Expl 8a)b /xk8 omfqain your reasoning.
参考答案:
The highest frequency of sound will be heard at
position C, while the child is swinging forward. Assuming the child is moving with SHM, then
the highest speed is at the equilibrium point, point C. And to have an increased pitch, the relative
motion of the source and detector must be towards each other. The child would also hear the lowest
frequency of sound at point C, while swinging backwards.
本题详细解析:
暂无
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