题目内容
一列波沿x轴正方向传播的简谐波,在t=0时刻的波形图如图所示,此时波恰好传播到Q点,已知这列波在P处出现两次波峰的最短时间间隔是0.4 s,
求:(1)这列波的波速是多少?
(2)经过多少时间质点R处于波峰位置?![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356049095109.png)
求:(1)这列波的波速是多少?
(2)经过多少时间质点R处于波峰位置?
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356049095109.png)
(1)
(2)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356050031772.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135604972867.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356050031772.png)
(1)由图可知:
而T=0.4S ![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135604972867.png)
(2)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356052521775.png)
本题考查了波的传播,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135605081534.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135604972867.png)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356052521775.png)
本题考查了波的传播,
![](http://thumb2018.1010pic.com/images/loading.gif)
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