gc textbook chapter 12 Sound (id: fcac2b34d)

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 are standing still. What frequency do you detec +sn8*u(9e rg *rp84dvy ig+ pzcau5lct if 6 i)(pvjqxoh 3a fire engine whose siren emits at 1550 Hz moves at a speed of 32 m 6 jpvo()xh3iq/s
(a) toward you,    Hz
(b) away from you?   Hz

参考答案:
空格1: 1710±2%  空格2: 1420±2% 


本题详细解析:

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