23. A girl is sitting near the open window of a train that is moving at a velocity 10.00m/s to the east. The girl’s uncle standsnear the tracks and watches the train move away. The locomotive whistle emits sound at the frequency of 500.0 Hz. Theair is still. What frequency does the uncle hear? (The speed of sound is 343m/s.)
(A) 471.7 Hz
(B) 485.8 Hz
(C) 500.0 Hz
(D) 515.0 Hz
(E) 530.0 Hz

參考答案

無參考答案

內容推薦

內容推薦