问题
问答题
一重为G的物体，随着传送带一起沿水平方向向右做匀速运动，不计空气阻力，请在画出物体A受力情况的示意图．
答案
物体在竖直方向上的受重力和支持力的作用，其受力的示意图如下图所示：
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一重为G的物体，随着传送带一起沿水平方向向右做匀速运动，不计空气阻力，请在画出物体A受力情况的示意图．
物体在竖直方向上的受重力和支持力的作用，其受力的示意图如下图所示：
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| A very special teacher in a high school had a husband who died suddenly of a heart attack. About a week after his death , she _ 1__ some of her thoughts with a classroom of students. with a __2__ look on her face, she __3__ and said, "__4__class is over, I would like to share with all of you a thought which I feel is very __5__. Each of us is put here on earth to learn, share, love, appreciate and give of ourselves—and none of us knows __6__ this fantastic experience will _7__. It can be __8__ at any moment. Perhaps this is a __9__ that we must __10_ the most out of every single day." Her eyes beginning to water, she went on "So I would like you all to make me a __11 —from now on , on your way to school, or on your way home, find something __12_to notice. "For, although it may sound __13__to some people, these things are the 'stuff' of life. The little things we are put here on earth to enjoy. The things we often take for granted. We must make it important to__14__ them, for at any time—it can all be taken away." The class was completely quiet. We all _15__ our books and filed（排成一行行走） out of the room __16__. That afternoon, I noticed more things on my way home from school than I had that whole semester.___17_, I think of that teacher and remember what an __18__ she made on all us, and I try to _19__ all of those things sometimes we all _20__. | ||||
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