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2022年2018年广州中考物理试题 .pdf

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1、vip 会员免费2018 年广州中考物理试卷(含答案)一、选择题（共36 分）.图 1 是常用的5 号电池的示意图，其型号的另一种表示方法为“14500”，前两位数是直径，后三位数是高度，这型号电池高度为A.14mm B.145mm C.500mm D.50.0mm 2.静置的密封容器内只有氢气.若以 O 表示氢气分子，图2 是最能代表容器内氢气分子分布的是3.吉他上的弦绷紧时发声的音调比不紧时高，则绷紧的弦发声比它不紧时A.振幅一定更大B.振幅一定更小C.振动频率一定更低D.每秒内振动次数一定更多4.对比图 3 中我国 20XX 年发电量和2030 年预测发电量，预测A.火电发电量将减少B.

2、水电发电量将增加C.我国将以核能发电为主D.风电发电量占总发电量的比例将减小5.如图 4 所示，通电导线a、b 固定不动，左磁体对a 的作用力为Fa，右磁体对b 的作用力为 Fb，下列说法正确的是vip 会员免费6.如图 5 所示金属球使小芳带电，则小芳A.得到电子B.失去电子C.得到原子核D.相互排斥的头发带上同种电荷7.如图 6 所示，OQ是水平地面，物体在水平拉力的情况下从O匀速直线到 Q。OP段拉力为 300N,做的功为，功率为，PQ段的拉力，做的功为为，功率为，则（）A,B,A,C,D,8.如图 7 所示，水平桌面上的甲乙两物体分别在水平拉力的作用下处于静止状态，甲乙，甲受到的摩擦力

3、（）文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V

4、8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S

5、4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9

6、A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V

7、5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N

8、8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7

9、J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7文档编码:CP4V5V8Y3V5 HV10N8S4S3V8 ZR1U7J9A9G7vip 会员免费A,大于 5N B,等于 5N C,大于乙受到的摩擦力 D,等于乙受到的摩擦力9.物体 M通过吸，放热，出现三种不同的状态，如图8，甲，乙，丙物态依次是（）A,固液气 B,气液固 C,气固液 D，液固气10.如图 9 所示，甲，

10、乙质量不同的小球从相同高度静止释放，甲球下落过程中经过 P,Q 两点，忽略空气阻力。下列说法正确的是（）A,着地瞬间，两球动能相等B,甲球在 P点和 Q点的机械能相等C,释放瞬间，两球的重力势能相等D,从释放到着地，两球所受重力做的功相等文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6

11、HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 Z

12、R3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档

13、编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X

14、6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2

15、 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6

16、文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6vip 会员免费11.向前

17、直线行驶的车内，小明给小芳连拍两张照片如图10所示，拍照过程中车可能（）A,向西加速 B,向东加速 C,向西减速 D,向东减速12.将物体分别放在甲，乙凸透镜前，物距相同，通过甲透镜成正立放大的像，通过乙透镜成倒立缩小的像，图 11 是平行于主光轴的光线通过甲透镜的光路图，图 12 中哪幅图可能是平行于主光轴的光线通过乙透镜的光路图（）文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7

18、K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R

19、3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J1

20、0N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:C

21、W7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK

22、4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3

23、J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码

24、:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6vip 会员免费二、填空题13.两条光线通过透镜的光路如图13 所示。(1)该透镜是 _透镜（选填“凹”“凸”）(2)光线 a射向水面.在图中画出a 的反射光线；大致画出a 进入水中的折射光线；标示出反射角 r1和折射角r2.(3)逐渐往容器中加水,光线 a 在容器底形成的光斑会_(选填“左移”、“右移”、“不动”).14.O 为支点的轻质杠杆原处于水平静止.现同时施加大小相等的力F1、F2（如图 14）.(1)此时杠杆能否保持平衡？_(2)画出图中F1的力臂 l115.（1）图 15 是托里拆利实验装置，测得当地大气压

25、等于_mm高的水银柱所产生的压强.(2)关于图 15 现象的成因,十七世纪有两种观点.观点一：否认大气压存在，玻璃管内本应充满液体，液面下降是因为管内的部分液体变成气体，管内气体越多，液面下降越多，观点二：管内液面上方是真空，大气压支撑起液柱.帕斯卡为了验证哪种观点正确，将两根长12m规格相同的玻璃管分别装满水和酒，倒置在相应液体槽中，酒的密度比水小，且比水易变成气体，若观点一正确，应出现图 16 中_图的现象，若观点二正确，应出现图 16中_图的现象.16.测量某液体密度的实验如图17 所示，液体的质量为 _g，依据公式=_，液体的密度 _g/cm3.文档编码:CW7K5P1S3X6 HK4

26、R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J

27、10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:

28、CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 H

29、K4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR

30、3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编

31、码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6

32、 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6vip 会员免费17.小明用图18 中的动滑轮匀速拉动水平地面上的物体A，测出 A移动的距离s、水平拉力F和 A的重力 G.(1)以上条件能否求出此时滑轮的机械效率?_如果能，写出的表达式；如果条件不足，写出还需补充的物理量的测量步骤和符号，并写出的表达式 _（用题目已知及补充的物理量符号表示）(2

33、)若 A在 10s 内运动了4m，A的速度为 _ 18.白色感压纸受到的压强达到可测最小值时才变色。且颜色随压强变大而变深，大于可测最大值时颜色不再变深，感压纸A的规格如图19 所示。实验 1：用 250N 的压力垂直作用在A 上，受力面积为0.25cm2，此压力对A 的压强为_N/cm2.实验 2：仍用 250N 的压力垂直作用在与A规格相同的感压纸上，要使它变色且颜色深度与实验1 不同，下列哪些受力面积符合要求？_ 2cm2 0.8cm2 0.3cm2 0.1cm2 0.01cm219.测得某熔断开关S 在不同电流下的熔断时间如下表.将电磁铁开关和S 接入电路，如图20 所示，当I4A 时

34、，电磁铁能在0.1s 内吸动衔铁，使电路断开，衔铁无法自动恢复至图示位置；当1AI 4A 时，电磁铁无法吸动衔铁，S 发热熔断，使电路断开（熔断时间为S开始通电到它熔断的时间）.(1)S 的电阻为 1，当 I=2A，通电时间为 _s 时 S熔断，此过程中 S产生的热量是_J；(2)当 I=5A 时，通电0.1s，S是否熔断？_(3)若电路中电流方向与图20 中相反，电磁铁吸引还是排斥衔铁？_ 文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4

35、R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J

36、10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:

37、CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 H

38、K4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR

39、3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编

40、码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6

41、 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6vip 会员免费三、解析题（共20 分）解析题应写出必要的文字说明、公式和重要的演算步骤，只写出最后的答案的不给分。有数值计算的题，演算过程及结果都要在数字后面写上正确的单位。20.测得某白炽灯在不同电压下的电功率如下表数据序号灯两端电压U/V 灯的电功率P/W 1 220 40 2 110 12.1（1）灯两端电压为220V 时，灯的电阻为多少？（2）灯两端电压为110V 时，通过灯的电流为多少？通电100s 灯消耗的电能是多少？21.小明每天测量同一个鸡蛋的质

42、量，再把鸡蛋放入水中，观察它的浮沉情况后，取出放好，下表是他记录的部分及现象。（鸡蛋的体积保持不变。g=10N/Kg,水=1.0103kg/m3）（1）求第 57 天鸡蛋所受浮力及鸡蛋的体积。（2）比较第1 天和第 70 天鸡蛋受到浮力的大小。写出判断依据。（3）根据表格的现象你如何判断存放时间的长短？文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A

43、2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y

44、4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5

45、P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V

46、1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N

47、9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7

48、K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R

49、3V1A2D2 ZR3J10N9Y4Y6vip 会员免费四、实验探究题（共20 分）22.小芳想了解当滑动变阻器与电阻并联时，调节滑片。电阻两端的电压及电路中的电流怎样改变（1）实验电路如图21 所示，请在图22 中连接对应的实物图。（2）改变滑动变阻器接入电路的阻值，记录如下表。根据表格中数据在图23 的坐标系中画出电阻R 的 U-I 图线文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:

50、CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 HK4R3V1A2D2 ZR3J10N9Y4Y6文档编码:CW7K5P1S3X6 H

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本文标题：2022年2018年广州中考物理试题 .pdf
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