2016-2017学年福州19中初二下学期物理期中试卷(无答案).pdf

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1、-1-福州第十九中学 2016-2017 学年第二学期八年级期中考物 理 试 卷全卷共 6 页,六大题,总分值150 分;考试时间90 分钟;g=10N/kg 友情提示:请把所有解答填写到答题卡上!请不要错位、越界答题!一、选择题本大题共有16 小题,每题2 分,共 32 分。每题只有一个选项正确1.苹果从树上落下的过程中,其惯性。A.先变大后变小B.先变小后变大C.变大D.不变2.如图 1 所示的几个小实验或生活现象能说明大气压存在的是。图 1 A.纸片拖住水杯B.橡皮膜外凸型管液面相平D.手指压住铅笔3.如图 2 的实例中属于增大压强的是。A.图钉尖端较尖B.书包背带较宽C.袋中汽车车轮较

2、多D.滑雪板面积较大4.用 120N 的力竖直向上提起一直重50N 的水桶,则水桶受到的合力。A.大小为 170N,方向竖直向上B.大小为 70N,方向竖直向上C.大小为 170N,方向竖直向下D.大小为 70N,方向竖直向下5,如图 3 所示,将小方凳放置于水平地面上,此时对地面的压力与压强分别为F1 和 p1,然后再将小方凳四脚朝上放置于同一水平地面,此时小方凳对地面的压力和压强分别为F2 和p2,则。1F2 p1p2 1F2 p1p2 6.如图 4 所示,在水平课桌上放一本书,以下属于一对平衡力的是。A.书对地球的吸引力和书的重力B.书所受的支持力和书对桌面的压力图 4 C.书所受的支持

3、力和书的重力D.书的重力和书对桌面的压力7.如图 5 所示为蜗牛在竖直墙面上缓慢爬行的图片,蜗牛爬行时会分泌出一种黏液,蜗牛正是靠这种黏液在墙上爬行的,蜗牛能牢牢静止在竖直的墙面上而不会掉落,这是因为蜗牛。A.受到的摩擦力大于它本身的重力B.受到的摩擦力等于它本身的重力C.分泌的黏液把蜗牛黏在墙壁上D.缓慢向上爬行时,受到的摩擦力向下图5-3-2 8.小张看到鸡蛋浮在盐水面上,他沿杯壁缓慢加入清水使鸡蛋下沉。在此过程中,鸡蛋受到的浮力F 随时间 t 的变化图像可能是图 6 中的。9.如图 7 所示,盛有水的容器中有A、B、C 三点,受到水的压强分别为pA、pB、pC,则。A=pBpC ApB=

4、pC ApB=pC CpAF3F2 2F3F1 3F1F2F1 14.一张报纸平放在桌面上时对桌面的压强为p1,将这张报纸对折后平放时对桌面的压强为p2,将这张报纸撕去一半后平放时对桌面的压强为p3,则p1、p2、p3 之间的关系是。1=2p2 2=4p1 3=2p1 1=p3 15.如图 11 所示,浮在大容器水面上的烧杯中盛有石块,假设把烧杯中石块投入水中一部分,水对大容器底部的压强会。A.变大B.变小C.不变D.无法判断16.如图 12 所示,a、b 是两种物质质量与体积的关系图像,分别用物质制成体积相等的甲、乙两实心物体。浸没在水中。松手稳定后。A.乙漂浮,乙受到的浮力小B.甲漂浮,甲

5、受到的浮力大图11 图12文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY

6、6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y

7、8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY

8、6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y

9、8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY

10、6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y

11、8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8-4-C.乙下沉,甲受到的浮力大D.乙下沉,甲受到的浮力大二、填空题本大题有5 小题;每空 1 分,共 12 分17.一根带有刻度的细玻璃管两端开口,通过橡皮塞插入装有红色溶液的玻璃瓶,制成一个简易的气压计,如图 13所示。细玻璃管内的液柱是由于瓶内的气压选填“大于”、“小于”或“等于”瓶外的大气压而形成的。把气压计从山下拿到山上,

12、细玻璃管内液柱高度会。18.取一只空牙膏袋,一次将它挤瘪,另一次将它撑开,两次都拧紧盖后放入同一杯水中,如图13 所示。两次牙膏袋的质量m甲和m乙的大小关系是m甲m 乙;两次排开水的体积V甲和V乙的大小关系是V甲V 乙;两次所受浮力F甲和F乙的大小关系是 F甲F 乙。图14 19.弹簧测力计下挂着一重为2N 的物体,物体一半体积浸入水中静止时,弹簧测力计示数如图15 所示,其示数为N,物体体积为m3。20.如图 16 所示,质量和底面积都相同的两个容器分别装有质量和深度均相等的甲、乙两种不同液体,甲液体的密度乙液体的密度;甲容器对桌面的压强乙容器对桌面的压强;甲容器底部所受液体的压力乙容器底部

13、所受液体的压力。均选填“大于”“小于”或“等于”图1321.一个载重气球在空气中匀速上升时,受到的浮力为2000N,假设在所载重物中再加200N 的物体,这时气球就能匀速下降,假设气球上升和下降时所受的浮力和阻力大小不变,则气球的重力为N,受到的阻力为N。三、作图题此题有2小题,每题 2 分,共 4 分22.如图 17 所示,小丽站在机场内水平匀速向右运动的自动运送带上,并与运送带保持相对静止,请在图中作出小丽所受力的示意图 O 点为小丽的重心。23.请在图 18 中画出鸡蛋的受到的浮力和斜面受到的压力。图 17 图18 文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5

14、W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2

15、 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5

16、W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2

17、 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5

18、W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2

19、 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5

20、W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8-5-四、简答题此题4 分24.请用你学过的物理知识解释为什么当你奔跑时碰到石块,必然是向前跌倒;而如果你脚踏西瓜皮,却是向后倒。五、实验、探究题本大题有5 小题,30 题 3 分,其余每空1 分,共 28 分25.某同学用如图19 所示的实验装置探究阻力对物体运动的影响。他在水平台面上分别铺上不同材料,让同一小车从斜面上的同一高度由静止滑下,在小车停下的位置分别做上标记a、b、c。1用同一小车从同一斜面的同一高度由静止滑下是为

21、了使小车到达水平面使小车的。2假设水平面上铺的材料种类是毛巾、木板、棉布,则标记c 是小车在外表停下的位置。3对上述实验进行分析并进一步推理:如果运动的物体在没有受到力的作用时,将。26.小明同学利用A、B 两物体质量均为1kg、泡沫等器材探究“压力的作用效果与什么因素有关”的 实验。如下图。图 20 1实验中小明时通过观察来比较压力作用效果的。2比较图 20 中甲、乙两图所示实验,能够得到的结论。3假设要探究“压力的作用效果与受力面积大小的关系”,应通过比较图所示实验。4小华同学实验时将物体B 沿竖直方向切成大小不同的两块,如图丁所示。他发现:它们对泡沫的压力作用效果相同,由此他得出的结论是

22、:压力作用效果与受力面积无关。你认为他在探究过程中存在的问题是。5为了进一步验证实验结论是否正确,同学们准备换用其他器材代替泡沫继续实验。以下材料最不适合的是A.橡皮泥B 水泥地面C 沙子D 海绵27.在“探究二力平衡条件”的实验中,主要通过探究力对物体的作用效果来实现探究目的。图 21 1如图 21 甲装置是探究二力平衡条件的一种方法,实验中通过改变砝码的来探究二力大小的关系;通过扭转小车松手后观察小车的状态,来探究二力是否。2小明发现用图21 甲装置无法完成全部探究过程,又设计了图乙所示的装置。在卡片平衡时,用剪刀将卡片从中文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J

23、4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N

24、5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J

25、4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N

26、5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J

27、4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N

28、5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J

29、4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8-6-间剪开,并观察随之发生的现象,由此可以得到二力平衡的又一个条件是。把硬纸板支撑起来,不再与桌面接触的目的是。28.如图 22 为小明“探究液体内部压强的特点”的实验过程图:1实验前先检查U 形管压强计左右两液柱是否。然后用手轻轻按压橡皮膜,如果两液柱没有出现高度差,说明 U 形管压强计存在的问题是。小明重新调整好器材,继续实验。2实验中,通过观察U 形管两侧液面的来判断探头处水的压强。3将图 A 中的探头逐渐下移,可

30、观察到U 形管内液柱的高度差逐渐变大,得出结论:。4向图 B 中的容器内加入一定量的浓盐水,为使探头在液体中的深度与加盐水前的深度相同,应将探头位置选填“上移”、“下移”或“不变”。29.在“探究浮力的大小跟哪些因素有关”的实验时,小丽提出如下猜想:猜想一:浮力大小跟物体排开液体的体积有关:猜想二:浮力大小跟液体的密度有关;猜想三:浮力大小跟物体的密度有关;1小丽用重为 3.2N 的物体 A 做了如图 23 所示的实验,该实验验证了猜想是正确的。可得出:在同种液体中,物体排开液体的体积越大,受到的浮力。实验中,物体A 浸没时受到的浮力为N,方向。图 23(2)下表是小丽验证猜想二时收集的实验数

31、据:分析比较表中数据和实验中图选填“甲”、“乙”或“丙”的数据可知:浮力的大小与液体的密度。3为验证猜想三,小丽选用了与物体A 密度不同的物体B 进行实验。她将物体B 逐渐浸入水中,容器中的水面上升至图示 O 位置时,发现棉线松弛,弹簧测力计示数为0,如图丁所示。取出物体B 时,小丽又将物体A 缓慢浸入水中,她在水面上升到选填“O 点之上”、“O 点”或“O 点之下”位置时,读取弹簧测力计的示数,这样做是为了控制液体种类物体 A 在液体中的状态弹簧测力计的读数/N 物体 A 受到的浮力/N 酒精浸没1.8 1.8 盐水浸没0.8 2.4 文档编码:CY6A3R6N5J2 HH7W5L6F4Y8

32、 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6

33、A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8

34、 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6

35、A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8

36、 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6

37、A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8

38、 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8-7-30.除图 24 中的器材外,还可以提供足够的水密度为水,测得漂浮在水面的玩具鸭所受的重力,简要写出合理方案可用画图或文字表述,并用题目所给及所测出的物理量推导出玩具鸭所受重力的表达式玩具鸭不能放入量筒。五、计算题本大题有3 小题,31 题 4 分,32 题 8 分,33 题 8 分,共 0 分31.如图 25 所示,一重 2N 的梯形截面容器,容器底面积是300cm3,倒入质量为 4kg 的水,水的深度为

39、15cm。求:1容器底所受水的压强:2容器底所受水的压力:32.如图 26 所示,最近有报道,奇男子方恕云凭借一根不经任何加工的毛竹横渡富春江。1已知人与手上物体的总质量为80kg,他两只脚站在毛竹上的受力面积时400cm2,求他对毛竹的压强。2假设他所用一根毛竹质量为210kg,体积3,则他能否实现水上漂行?33.一带阀门的圆柱形容器,底面积是200cm2,装有 12cm 深的水,正方形M 边长为 10cm,重20N,用细绳悬挂放入水中,有1 的体积露出水中,如图27 所示,试求:51正方形 M 受到的浮力以及此时水对容器底部的压强。2假设从图示状态开始,通过阀门K 缓慢放水,当容器中水面下

40、降了2cm 时,细绳刚好被拉断,则细绳能承受的最大拉力是多少?图24 图 25 图 26 图 27 文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3

41、R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 Z

42、Z3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3

43、R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 Z

44、Z3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3

45、R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8文档编码:CY6A3R6N5J2 HH7W5L6F4Y8 ZZ3J4J5W7C8

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