本题目来源于试卷: Doppler Effect，类别为 美国物理杯赛(Physics Bowl)
[单选题]
08.18: A car is moving to the l a+rj e*wo/4m8 lx;nn80alhrb wcn13ta,gig6eft at 20 m/s while a truck is moving to the ri )iq 0vbnq, i op8-*+npkmbke+ght at 25 m/s. If the truck emits a sound of frequency 5000 Hz, what is the perceived frequency of the soun,vk0i+bqe+pp* )8 nnki- mobqd by the driver of the car? Assume the vehicles are moving directly away from each other on a $20.0^{\circ}C$ day
A. 4384 Hz
B. 4706 Hz
C. 4932 Hz
D. 5079 Hz
E. 5714 Hz
参考答案: A
本题详细解析:
暂无
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