题目内容
如图3所示,甲图为某一机械横波在
时刻的波形图,乙图为
轴上P点处质点的振动图象,则下列判断正确的是 ( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241220291535712.jpg)
A
.该列波的波速为![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029263389.gif)
B.若P点的坐标为
,则该列波沿
轴的正方向传播
C.该列波的频率可能为2Hz
D.若P点的坐标为
,则P点处质点的振幅为零
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029122237.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029138187.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241220291535712.jpg)
A
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412202918572.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029263389.gif)
B.若P点的坐标为
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029278423.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029138187.gif)
C.该列波的频率可能为2Hz
D.若P点的坐标为
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122029387419.gif)
A
略
![](http://thumb2018.1010pic.com/images/loading.gif)
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