(08年黄桥中学三模)(6分)(选修3-4)如图所示,一列简谐横波沿+x

08年黄桥中学三模)6分)(选修3-4)如图所示,一列简谐横波沿+x方向传播.已知在t=0时,波传播到x轴上的B质点,在它左边的A质点位于负最大位移处;在t=0.6s时,质点A第二次出现在正的最大位移处.

    ①这列简谐波的周期是     s,波速是    m/s

    ②t=0.6 s时,质点D已运动的路程是    m

答案

答案 0.450.1

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