本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理
[单选题]
Two adjacent sources ej,m6bi jdh891dw (djw ach emit a frequency of 87gngyvxf75rh5x e(;o00 Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 havo 5v( hy7g;xnf5 ger7xe to be moved so an observer in front of the sources would hear no sound?
A. $0.123 \; m$
B. $0.321 \; m$
C. $0.213 \; m$
D. $0.312 \; m$
参考答案: C
本题详细解析:
暂无
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