题目内容
模块3-5试题
(1)下列说法中正确的是
(2)假设高速运动的
粒子与一个静止于磁感应强度为B的匀强磁场中某点的氮核(
)发生正碰。碰后产生两个新核,在磁场中形成如图14所示的两条半径分别为R和r (R>r)的圆形径迹。其中R是质量较小核的经迹,r是质量较大核的经迹。
①请写出该核反应方程;
②求出碰前
粒子的速度(质子质量为m,电量为e)。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241214288085931.jpg)
(1)下列说法中正确的是
A.玻尔的三个假设成功的解释了氢原子发光现象 |
B.卢瑟福在![]() |
C.居里夫人在原子核人工转变的实验中发现了中子 |
D.爱因斯坦为解释光电效应的实验规律提出了光子说 |
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428762201.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428777356.gif)
①请写出该核反应方程;
②求出碰前
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428762201.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241214288085931.jpg)
(1) A D
(2)①![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428980643.gif)
②![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428980688.gif)
(2)①
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428980643.gif)
②
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428980688.gif)
(1) A D (全部选对得4分,选对但不全的得2分,有选错的得0分)
(2)解:
(3’)
由
(2’)
得
核的动量 ![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429198618.gif)
核的动量
(1’)
由动量守恒定律
(2’)
∴![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429245581.gif)
∴
(1’)
(2)解:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121428980643.gif)
由
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429011540.gif)
得
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429167239.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429198618.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429198235.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429214565.gif)
由动量守恒定律
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429230489.gif)
∴
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429245581.gif)
∴
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121429292819.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目