本题目来源于试卷: Doppler Effect，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.39: A point wave source tco 7 8mg/y0ako./vr x9dgu:pzr i wxowb69x3cg u-hk+1avels along the x-axis at constant speed $v_s$. Stationary observers on the x-axis measure the wavelength of the waves that they receive. The ratio of the wavelength measured at a location behind the source to the wavelength measured at a location in front of the source is 1.50. If the wave speed is v, what is the source speed $v_s$?
A. $\frac{1}{5}v$
B. $\frac{1}{4}v$
C. $\frac{1}{3}v$
D. $\frac{1}{2}v$
E. $\frac{2}{3}v$
参考答案: A
本题详细解析:
暂无
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