一列波沿+x轴方向传播.一列波沿+x轴方向传播,当x1=10m的A点位于波峰时,x2=140m的B点位于波谷,在A,B之间有6个波峰,振源的振动周期为0.2s,求:(1)波的速度; (2)B点从波谷开始经多少时间位于波峰
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![一列波沿+x轴方向传播.一列波沿+x轴方向传播,当x1=10m的A点位于波峰时,x2=140m的B点位于波谷,在A,B之间有6个波峰,振源的振动周期为0.2s,求:(1)波的速度; (2)B点从波谷开始经多少时间位于波峰](/uploads/image/z/12965627-11-7.jpg?t=%E4%B8%80%E5%88%97%E6%B3%A2%E6%B2%BF%2Bx%E8%BD%B4%E6%96%B9%E5%90%91%E4%BC%A0%E6%92%AD.%E4%B8%80%E5%88%97%E6%B3%A2%E6%B2%BF%2Bx%E8%BD%B4%E6%96%B9%E5%90%91%E4%BC%A0%E6%92%AD%2C%E5%BD%93x1%3D10m%E7%9A%84A%E7%82%B9%E4%BD%8D%E4%BA%8E%E6%B3%A2%E5%B3%B0%E6%97%B6%2Cx2%3D140m%E7%9A%84B%E7%82%B9%E4%BD%8D%E4%BA%8E%E6%B3%A2%E8%B0%B7%2C%E5%9C%A8A%2CB%E4%B9%8B%E9%97%B4%E6%9C%896%E4%B8%AA%E6%B3%A2%E5%B3%B0%2C%E6%8C%AF%E6%BA%90%E7%9A%84%E6%8C%AF%E5%8A%A8%E5%91%A8%E6%9C%9F%E4%B8%BA0.2s%2C%E6%B1%82%3A%281%29%E6%B3%A2%E7%9A%84%E9%80%9F%E5%BA%A6%3B+%282%29B%E7%82%B9%E4%BB%8E%E6%B3%A2%E8%B0%B7%E5%BC%80%E5%A7%8B%E7%BB%8F%E5%A4%9A%E5%B0%91%E6%97%B6%E9%97%B4%E4%BD%8D%E4%BA%8E%E6%B3%A2%E5%B3%B0)
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