题目内容
一列简谐横波在弹性介质中沿x轴传播,波源位于坐标原点O,t=O时刻波源开始振动,t="3" s时波源停止振动,如图为t="3." 2 s时的波形图。其中质点a的平衡位置离原点O的距离为x=2.5m。以下说法正确的是_______。(选对一个给3分,选对两个给4分,选对3个给6分。每选错一个扣3分,最低得分为0分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241324450123527.jpg)
E. 从波源起振开始计时,3.0 s内质点a运动的总路程为2. 5 m
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241324450123527.jpg)
A.波速为5m/s |
B.波长![]() |
C.波源起振方向沿y轴正方向 |
D.在t=3.3 s,质点a位于波谷 |
ABE
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445153901.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445168267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445199319.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445231266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445262265.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445199319.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445168267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445231266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445418310.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445496923.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445199319.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445168267.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445761433.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445808283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445839282.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132446073968.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445808283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445808283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132446307497.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132445808283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132446603258.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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