题目内容
如图所示,一列机械波沿x轴正方向传播,波速为16m/s,某时刻的图象如图,由图象可知
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250052026557848.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250052026557848.jpg)
A.这列波波长为16m |
B.这列波传播8m需2s时间 |
C.x=4m处质点的振幅为0 |
D.x=5m处质点将向y轴正向运动 |
D
试题分析:由相邻波峰间的距离读出波长为λ=8m.故A错误.波传播8m需要的时间
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005202671882.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005202702483.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005202717498.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.这列波波长为16m |
B.这列波传播8m需2s时间 |
C.x=4m处质点的振幅为0 |
D.x=5m处质点将向y轴正向运动 |