Physics Unit12: Sound (id: d88c39de4)

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]
Pressure and displacetv:c5iw/0f dhqfl92h+ wzdv9o9 tad 5 ment wavesdf*sb ,-rb5 opwm(g0sq31 uy+ q/wghs are

A. in phase.
B. $45^{\circ}$ out of phase.
C. $90^{\circ}$ out of phase.
D. $180^{\circ}$ out of phase.


参考答案:  C


本题详细解析: 暂无

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