题目内容
一列简谐横波沿x轴正方向传播,波速为2cm/s。某时刻该波刚好传到P点,波形如图所示。从此时刻开始计时,下列说法中正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242324340734965.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242324340734965.png)
A.振幅为2cm,波长为3cm |
B.0.5s时质点P正处于波峰 |
C.1.5s时质点S开始振动,且振动方向向下 |
D.经过2.0s,质点P沿x轴正方向运动8cm |
C
试题分析:观察波形图可以知道波长
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232435133563.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232436397549.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232437801607.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232439158656.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232440625421.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232442013484.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824232443401700.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242324442758259.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目