周期为2.0s的简谐横波沿x轴传播，该波在某时刻的图象如图所示，此时质点P沿y轴负方向运动，则该波_刷题宝

题干

周期为2.0s的简谐横波沿x轴传播，该波在某时刻的图象如图所示，此时质点P沿y轴负方向运动，则该波（）

A：沿x轴正方向传播，波速v=20m/s

B：沿x轴正方向传播，波速v=10m/s

C：沿x轴负方向传播，波速v=20m/s

D：沿x轴负方向传播，波速v=10m/s

上一题下一题 0.0难度选择题更新时间:2014-08-06 04:12:12

答案(点此获取答案解析）

B

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