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研究所、轉學考(插大)◆普通物理學題庫下載題庫

上一題
1. A jet plane in straight horizontal flight passes over your head. When the plane is directly above you, the sound seems to come from a point behind the plane in a direction 45° from the vertical. The speed of the sound is vs. The speed of the plane is about:
(A) vs
(B) 0.5vj
(C) 0.7 Ivj
(D) 1.41vj
(E) 2vs.



1.A jet plane in straight horizontal fli..-阿摩線上測驗