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 thazz)nl ujj z/ e/g2fj1qsl,92e lega4 l gd.oe22q2y7qebft at 20 m/s while a truck is moving to the right at 25 m/s. If the truck emits a sound of frequency 5000 Hz, what is 2 722b4ady.oqqge egl the perceived frequency of the sound 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
| 
