本题目来源于试卷: Physics Unit12: Sound，类别为 国际高中通用物理
[单选题]
Two adjacent sources qgq ;+z a.ti fnw54kjx(yt0 *.exwez3xf(f2 qrc.xg- p92e nx each emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s.-2f2rxpg nfx9 x(c .eq How much farther back would source 1 have 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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