本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理
[单选题]
A sound has a frequencyufamj j;m1+ ab na464hz:cqr- of 1+gq6-21 lo1 k jjut1 kcgqpc9a*ueb4 (dp.pbu000 Hz. If a listener moves with a speed of 30 m/s away from the source, what is the frequency heard by the objac o(bgqq6gb- tuk p2+1u 1k*eu. 9djc1l 4ppserver? (The sound speed is 340 m/s.)
A. $912 \; Hz$
B. $919 \; Hz$
C. $1000 \; Hz$
D. $1090 \; Hz$
参考答案: A
本题详细解析:
暂无
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