53. An observer is moving with speed u toward a stationary source which emits sound waves of frequency f. What is the frequency f' heard by the observer? Assume the speed of sound to be v.
(A)f'=f
(B)
(C)
(D)
(E)

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統計： A(0), B(14), C(0), D(0), E(0) #3222820

詳解 (共 1 筆)

#6068896
好佛心的題目喔
ㅤㅤ
我就評論 不要選我當解答
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