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1、海南省 20XX 年初中毕业生学业考试理化试题特别提醒：1答案一律用黑色笔填写在答题卡上，写在试题上无效。2答题前请认真阅读试题有关说明。3要合理分配好答题时间。请沉着冷静，细心作答，祝你成功！第一部分物理科试题（满分110 分）一、选择题（本大题有8 小题，每小题只有一个选项符合题意。每小题4 分，共 32 分）（11 海南）1下列光现象中，由于光的直线传播形成的是：答案：A（11 海南）2下列能源中属于不可再生能源的是：A 风能B 太阳能C 潮汐能D 石油答案：D（11 海南）3 天气由阴雨转为晴朗时室内的瓷砖地板和墙壁上有时会出现小水珠，即“回潮”现象。“回潮”时发生的物态变化是：A 汽
2、化B 液化C 凝固D 升华答案：B（11 海南）4端午节，小明给奶奶剥粽子时闻到粽子的香味，这个现象说明：A 分子间存在作用力B 分子间有空隙C 分子由原子组成D 分子在不停地运动答案：D（11 海南）5如图所示的实例中，属于增大压强的是：答案：D（11 海南）6上海交大研究团队于20XX 年初成功研发了百米级第二代高温超导带材，使我国跻身该技术领域国际先进行列。你认为超导材料不适合制作：A 电炉丝B 电动机线圈C 计算机电子元件D 输电导线答案：A（11 海南）7研究牛顿定律时运用了实验和推理的方法，以下声现象的探究中运用该方法的是：答案：B（11 海南）8小靖尝试比较地沟油和花生油的物理性
3、质。她将分别盛有这两种油的杯子一起放入冰箱内降温，她发现两杯油的温度都降到7时，地沟油变为固态而花生油仍为液态，这说明地沟油和花生油具有不同的：A密度B沸点C凝固点D比热容答案：C 二、填空题（本大题有8 小题。每小题4 分，共 32 分）（11 海南）9 分 子、电 子、太 阳 系、地 球 四 个 物 体 中，尺 度 最 大 的 是 _，最 小 的 是_。答案：太阳系电子（11 海南）10小靖分别用甲、乙两种物质探究“质量与体积的关系”时，作出如图所示的图象，由图象可知物质的质量与体积成_比，甲物质的密度是_g/cm3。文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V
4、6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1
5、O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B
6、10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z
7、1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:C
8、S1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS
9、5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI
10、1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6答案：正0.8（11 海南）11如图，小玲向空矿泉水瓶内倒入热水后迅速倒出并盖紧瓶盖，瓶子变扁了，这个现象证明了_ 的存在，瓶子被压扁表明力可以改变物体的_。答案：大气压形状（11 海南）12如图是电磁起重机工作的情景，它工作时利用了电流的_ 效应；手机通话是利用_传递信息。答案：磁电磁波（11 海南）13 海啸发生时，汹涌的海水由于
11、运动而具有的能属于_（选填“动”或“势”）能，海水冲走船只时，海水的作用力对船_（选填“做”或“不做”）功。答案：动做（11 海南）14小晖用“伏安法”测小灯泡的电阻，某次正确测量时测得小灯泡两端的电压为 2V,电流表的示数如图所示，则通过小灯泡的电流为_A,小灯泡的电阻是_。答案：0.2 10 文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W
12、3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6
13、文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C
14、3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D
15、1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5
16、N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C
17、4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W
18、2D1W3 ZI1Z1V6I5N6（11 海南）15工人用如图所示的甲、乙两种滑轮把同样一种沙提升相同的高度，所用的拉力分别是F甲、F乙，滑轮机械效率分别是甲、乙，若不计绳重和摩擦，且沙子的重力大于动滑轮重力，则F甲_ F乙，甲_乙。（选填“”、“”或“”）答案：（11 海南）16上图是小晖设计的压力传感器原理图，其中R 是滑动变阻器，RO为定值电阻。压力F 增大时，滑动变阻器接入电路的阻值_，电压表的示数_。（选填“增大”或“减少”）答案：增大增大三、作图和实验题（本大题有3 小题。第17 题 4 分，第 18 题 8 分，第 19 题 10 分，共 22 分）（11 海南）17按要求作图（
19、必须用尺作图）（1）在图中画出水平向右运动的足球所受重力的示意图；答案：略（11 海南）17（2）完成图中入射光线AO 的反射光路图。答案：略（11 海南）18小明探究“浮力大小与深度的关系”，探究过程及有关数据如图所示。（1）物体（圆柱体）所受的重力是_ N。（2)物体受到的最大浮力是_ N。（3）图乙中正确反映弹簧测力计示数F 和物体下表面在水中的深度h 关系的图象是_。（物体未接触容器底）文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS
20、5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI
21、1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码
22、:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4
23、HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3
24、ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档
25、编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P
26、4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6（4）图甲的弹簧测力计_（选填“能”或“不能”）用来测量一个大西瓜的重力。答案：（1）4（2）0.8（3）D（4）不能（11 海南）19小靖和小晖用如图所示的装置探究“电流产生的热量与电阻的关系”。装置中除了R甲R乙外，其余条件均相同。（1）将两电阻丝串联接入电路是为了控制通过电阻丝的_及通电时间相等。实验发现，甲瓶温度计示数升高快，表明该实验条件下，导体的电阻越大，电流产生的热量越_。（2）小靖提议利用该装置改装成“比较食用油和煤油的吸热能力”的实验。若保持甲
27、的器材不变时，他们除了把乙的煤油换成食用油外，还需更换乙的_。此外，为了能在通电一段时间后，通过比较两温度计示数的大小来比较食用油和煤油的吸热能力，他们设计的实验必须满足的条件还有_。答案：（1）电流多（2）电阻丝；甲、乙质量和初温相同，电阻丝阻值相等。四、综合应用题（本大题有2 小题。每小题12 分，共 24 分）（11 海南）20东环铁路的开通为我省的交通运输开启了新的里程碑。（1）根据下表的信息，算出 D7305 次动车从海口到三亚的平均速度大约为多少km/h（计算时各物理量可用近似值）文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5
28、C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10
29、W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V
30、6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1
31、O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B
32、10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z
33、1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:C
34、S1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6（2）动车组功率为5000kW,求动车组匀速行驶6min 牵引力所做的功。（3）电力牵引的动车组与内燃机车牵引的列车相比，除了功率大、速度快外，还具有哪些优点？（从环保角度答出两点）（4）请运用物理知识解释：旅客在站台上候车时为什么必须站在安全线外？答案：解：（1）动车从海口到三亚所需的时间t12:12-10:152h,动车的平均速度s/t 308km/2h154
35、km/h（2）动车组牵引力做的功：Wpt5000kW 6/60h500 kW h 或 Wpt5 106W 6 60s18 109J（3）噪声小没有尾气排放，几乎没有废气污染（4）因为动车行驶时会带动周围空气流动，由于流体流速快的地方压强小，旅客站在安全线内可能会被气流卷入铁轨，造成危险。（11 海南）21下表是某品牌电热水壶的主要技术参数。（设电阻不随温度而变化）（1）求电热壶正常工作时的电流。（2）该电热壶只有一个发热电阻R，请你利用一个定值电阻RO一个开关S 对该电热壶进行改装，使它还具备保温功能。画出改装后的电路图。（3）要使电热壶保温时发热电阻R 的功率为额定功率的1/9，RO的阻值应
36、为多大？（4）在改装后的电路中若再接入一个电阻R1使电路消耗的功率最大，请算出 R1160时电路的最大功率。答案：解：（1）电热壶正常工作时的电流为IPU 1210W220V5.5A（2）改装后的电路图为：额定电压220V 额定功率1210W 文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3
37、P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1
38、W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N
39、6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4
40、C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2
41、D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I
42、5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6（3）电热壶的电阻为
43、：RU 2P（220V）2 1210W40当实际功率为额定功率的1/9 时，实际电压为U实由（U实U额）2=P实P额即（U实U额）2=1/9 P额P额=1/9解得 U实=1/3 U额则 R0两端电压为U0=2/3 U额由串联分压关系U实 U0=R实 R0 得(R0=U0 RU实=2/3 U额40)(1/3 U额)=80（4）当开关S 闭合、R1与 R 并联时电路消耗的功率最大（如图）解法 1：P1 U2/R1(220V)2/160 3025 W P大P额+P1 1210 W+3025 W15125 W 解法 2：并联时总电阻为：R并=（R1R）（R1+R）=（160 40）（160+40）=3
44、2 最大功率为：P大=U 2R并=（220V）2 32 =1512 5 W文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4
45、HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3
46、ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档
47、编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P
48、4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W
49、3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6文档编码:CS1O5C4C3P4 HS5B10W2D1W3 ZI1Z1V6I5N6