题目内容
一列沿x轴正方向传播的简谐机械横波,波速为4m/s。某时刻波形如图所示,下列说法正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242215446673711.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242215446673711.jpg)
A.这列波的振幅为4cm |
B.这列波的周期为1s |
C.此时x=4m处质点沿y轴负方向运动 |
D.此时x=4m处质点的加速度为0 |
D
试题分析:振幅等于
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221545229310.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221546212543.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221547460519.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221548583828.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.这列波的振幅为4cm |
B.这列波的周期为1s |
C.此时x=4m处质点沿y轴负方向运动 |
D.此时x=4m处质点的加速度为0 |