本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理
[单选题]
Suppose that a sound source is emitting waves uniformly in all directions. ,l;m;x;.qahgd, bokp Iccw )cc q(ya i-7as tsin/2p:6i ;6vlu lk:m,gf you move to a point ln wqv-a(ck2;6yigsclpu:)a i/6 t mc:i7,cs twice as far away from the source, the frequency of the sound will be
A. unchanged.
B. half as great.
C. one-fourth as great.
D. twice as great.
参考答案: A
本题详细解析:
暂无
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