题目内容
如图所示为t = 0时刻的某机械波的波形图,波的传播方向平行于x轴.质点A位于
处,质点B位于
处.
时,质点B第一次出现在波峰位置;t = 3s时,质点A第一次出现在波峰位置.则下列说法不正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241204163204513.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416273387.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416289388.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416320233.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241204163204513.jpg)
A.波速为1m/s |
B.波的周期为4s |
C.波沿x轴正方向传播 |
D.![]() |
C
A选项:由题意“
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416320233.gif)
B选项:由题意“
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416320233.gif)
C选项:由题意“
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416320233.gif)
D选项:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120416351229.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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