题目

如图甲所示，底面积为，高为10cm的平底圆柱形容器和一个质量为20g、体积为的小球置于水平桌面上（容器厚度不计）。容器内盛某种液体时，容器和液体的总质量与液体的体积关系如图乙所示。求： (1)液体的密度是多少？ (2)容器内盛满这种液体后，容器底部受到液体的压强是多少？ (3)容器内盛满这种液体后，再将小球轻轻地放入容器中，小球静止后，容器对桌面的压强是多少？读一读，填一填。Lili: Hi, Tom. How are you?Tom: __1__, thank you. What did you do at the weekend?Lili: _  2__. I was very happy. There were many animals in the zoo.Tom: Great! Did you take pictures?Lili: Yes, I did. __3__?Tom: I visited my grandpa with my parents yesterday.Lili: _  4__?Tom: My grandpa read some newspapers.Lili: Were you happy?Tom: __ 5__.Lili: _  6__ are you going to go tomorrow?Tom: Oh! It is Tuesday.  I'm going to go to the park in the afternoon.Lily: __7__ are you going to do there?Torri: I'm going to play games __8__ my friends. What about you?Lili: I'm __9__ to buy some CDs. I can __10__ to them in the evenings.