选择题 较易0.85 引用4 组卷676
如图所示,一个装有水的平底密闭矿泉水瓶,先正立放置在水平桌面,再倒立放置。两次放置时,瓶对桌面的压力分别为F甲和F乙,瓶对桌面的压强分别为p甲和p乙,则( )
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747570859450368/2748355086180352/STEM/0b9ff061-650d-4681-80ab-f2c6cd3a70c3.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2021/6/21/2747570859450368/2748355086180352/STEM/0b9ff061-650d-4681-80ab-f2c6cd3a70c3.png?resizew=158)
A.F甲>F乙 | B.p甲>p乙 | C.F甲<F乙 | D.p甲<p乙 |
2021·浙江杭州·中考真题
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有一个密度均匀的长方体铜块,被截成A. B两块,如图所示,已知LA:LB=3:2,则它们对水平桌面的压力和压强之比分别为 ( )
![](https://img.xkw.com/dksih/QBM/2019/6/5/2219310358413312/2243678771625984/STEM/9fd02fa7643f46d0b94c5cca2ae72b26.png?resizew=153)
![](https://img.xkw.com/dksih/QBM/2019/6/5/2219310358413312/2243678771625984/STEM/9fd02fa7643f46d0b94c5cca2ae72b26.png?resizew=153)
A.FA:FB=2:3PA:PB=3:2 | B.FA:FB=3:2PA:PB=2:3 |
C.FA:FB=2:3PA:PB=1:1 | D.FA:FB=3:2PA:PB=1:1 |
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