题目内容
(9分) 如图所示的玻璃管ABCDE,CD部分水平,其余部分竖直(B端弯曲部分长度可忽略),玻璃管截面半径相比其长度可忽略,CD内有一段水银柱,初始时数据如图,环境温度是300K,大气压是75cmHg。现保持CD水平,将玻璃管A端缓慢竖直向下插入大水银槽中,当水平段水银柱刚好全部进入DE竖直管内时,保持玻璃管静止不动。问:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250038312667079.png)
(i)玻璃管A端插入大水银槽中的深度是多少?(即水银面到管口A的竖直距离)?
(ii)当管内气体温度缓慢降低到多少K时,DE中的水银柱刚好回到CD水平管中?
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250038312667079.png)
(i)玻璃管A端插入大水银槽中的深度是多少?(即水银面到管口A的竖直距离)?
(ii)当管内气体温度缓慢降低到多少K时,DE中的水银柱刚好回到CD水平管中?
25cm 262.5K
试题分析:ⅰ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831282310.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831313361.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831329277.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831344408.png)
ⅱ
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831360313.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831376411.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831391335.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003831407304.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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