2022年中考真题解析物理 .pdf

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1、二一五年齐齐哈尔市初中学业考试物理试卷一、单项选择题（每小题2 分，共 24 分。每小题只有一个选项是正确的，请把正确选项的字母填写在题后的括号内）1根据生活经验，下列说法与实际相符合的是（）A一支中考涂卡所用2B 铅笔的长度约17.5cm B中学生大拇指甲的面积约10cm2 C一本初中物理课本的质量约500g D人体感觉舒适的温度约402小明同学在学习了声现象后，总结了以下四点，其中说法错误的是（）A超声波清洗机清洗眼镜，是利用了声波能传递能量B在音乐会中，我们能区分出小提琴和钢琴的声音是利用了声音的音色特性C声音在真空中传播的速度是3.0 108m/s D摩托车消音器是在声源处减弱噪声3.

2、下列四种生活用具中，使用时属于费力杠杆的是（）【答案】C【解析】试题分析：杠杆分为省力杠杆、费力杠杆和等臂杠杆，从图中可知剪铁剪刀、钳子和剪树枝剪刀使用时动力臂都大于阻力臂，是省力杠杆，只有镊子使用时动力臂小于阻力臂，是费力杠杆。故符合题意的选项是C。【考点定位】杠杆的分类4“注意安全，珍惜生命”是大家共同的心愿。下列这些在生活中的做法，符合安全用电原则的是（）A家用电器着火，立即用水扑灭B在高压电线下放风筝C打扫卫生时，用湿抹布擦拭插座面板D保险盒安装在总开关后面5把标有“6V 6W”的小灯泡L1和标有“6V 3W”的小灯泡L2串联后接在电源电压为6V 的电路中（不考虑灯丝电阻的变化），下列

3、说法正确的是（）A因为通过它们的电流相等，所以一样亮B因为灯L2电阻较大，实际功率较大，所以灯L2较亮C因为灯L1额定功率较大，所以灯L1较亮D因为灯L1实际功率较大，所以灯L1较亮6下列各图不属于连通器的是（）文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S

4、1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4

5、S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL

6、4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 H

7、L4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7

8、HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7

9、 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U

10、7 HL4S1V5K1B10 ZB10A4F4Q7T1文档编码:CY9A5W4L10U7 HL4S1V5K1B10 ZB10A4F4Q7T17下列各种现象，属于光沿直线传播的是（）A湖边的树在湖水中的“倒影”B路灯下人在地面上的影子C三棱镜分解白光D在平面镜前看到自己的像8下列各种现象，需要放出热量的是（）A北方冬天户外冰冻的衣服变干B春天冰雪消融C用电吹风将湿头发吹干D深秋，清晨草地上出现霜9.下列四幅图中，能反映出发电机工作原理的是（）文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10

11、U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H

12、8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1

13、Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O

14、10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS

15、9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5

16、V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N

17、3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F710如图所示，在平底烧瓶内装有少量的水，用打气筒向瓶内打气，观察到许多物理现象，其中分析错误的是（）A往瓶内打气时，外界对瓶内气体做功B往瓶内打气时，瓶内气体内能减少C塞子跳出时，看到瓶内有白雾出现，是液化现象D塞子跳出时，瓶内气体温度降低11用两个相同的滑轮组成的滑轮组固定在天花板上，如图所示，当匀速提升物体时，绳子自由端的拉力F=20N，物体移动的速度为0.1m/s，每个滑轮重10N，忽略绳重和摩擦，下列说法正确

18、的是（）文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H

19、8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1

20、Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O

21、10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS

22、9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5

23、V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N

24、3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7A绳子自由端移动的速度为0.3m/s B物体的重力为40N C该滑轮组的机械效率为66.67 D拉力 F 的功率为2W 12.如图所示，电源电压6V 保持不变，测量额定电压为3.8V 小灯泡的额定功率，下列说法错误的是（）A闭合开关前，滑片P 应移动到B

25、端B闭合开关后，小灯泡不发光，可能是小灯泡灯丝断了C滑片 P 向 A 端移动时，小灯泡额定功率变大，亮度变亮D当电压表示数为3.8V 时，读出电流表的示数，可算出小灯泡的额定功率也可能电流太小，还没有到发光的程度，也可能是小灯泡灯被短路，选项B 正确，不符合题意；滑片P 向A 端移动时，流过小灯泡的电流变大，实际额定功率变大，亮度变亮，但额定功率不变，选项C 不正确，文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N

26、3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:

27、CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 H

28、F5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ

29、3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编

30、码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7

31、 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2

32、ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7符合题意；额定功率就是小灯泡正常工作时的功率，就是小灯泡在额定电压下工作时的功率，但当电压表示数为 3.8V 时，读出电流表的示数，算出小灯泡的功率就是额定功率。选项D 正确，不符合题意。故选C。【考点定位】滑动变阻器的作用、电路故障、电功率二、多项选择题（每小题3 分，共 9 分。每小题有两个或两个以上选项是正确的，请把正确选项的字母填在题后的括号内。选项不全但都正确的得1 分，有错误选项不得分）13下列说法正确的是（）A苹果从树上落向地面的过程中，重力对苹果做功，重力势能增大 B风能、

33、水能、太阳能都属于二次能源C人们上了年纪以后眼睛的睫状体对晶状体的调节能力减弱，太近、太远的物体都看不清楚D水平路面上行驶的汽车，关闭发动机后能继续运动，是由于汽车具有惯性14在弹簧测力计下悬挂一个实心小球，弹簧测力计的示数是8N。把实心小球浸没在密度为0.8 103kg/m3的油中，弹簧测力计的示数是6N，下列说法正确的是（）A小球受到的浮力是2N B小球的质量是0.8 kg C小球的体积是2.5 10-4m3D小球的密度是3.2 103g/cm3【答案】ABC【解析】文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V

34、1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3

35、O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:C

36、S9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF

37、5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3

38、N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码

39、:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7

40、HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F715如图所示，电源电压恒为6V，定值电阻R1=10，滑动变阻器R2的最大阻值为20，电压表接入电路的量程为0 3V，电流表接入电路的量程为00.6A。当开关 S 闭合，滑动变阻器的滑片P从 b 端向 a 端移动过程中，在保证电压表和电流表安全的情况下，下列说法正确的是（）A电压表的示数变小，电流表的示数变大B电流表的示数变化范围为 0.2A0.3A C电阻 R2的两端电压由4V 减小到

41、 3V D电阻 R1消耗的功率的变化范围为0.4W0.9W 三、填空题（每小题2 分，共 24 分。将正确答案写在题中横线上的空白处）16 20XX 年 5 月，尼泊尔发生强烈地震，造成了大量山石的滚落，这说明力可以改变物体的，搜救人员与指挥中心利用对讲机交流时，信息是利用传递的。文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O1

42、0U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9

43、H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V

44、1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3

45、O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:C

46、S9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF

47、5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3

48、N3O10U8F717厨师在爆炒肉片时，先把淀粉拌入肉片中，再放入热锅里爆炒，在炒肉片过程中，肉片内能（选填“变大”、“变小”或“不变”）；附近能闻到肉香，这是现象。18 小军同学利用焦距为15cm 的凸透镜做了“探究凸透镜成像规律”的实验，实验中当光屏距凸透镜18cm时，会在光屏上出现一个（选填“缩小”、“等大”或“放大”）的实像。应用这一成像原理制成的光学仪器是（答出一个即可）。19某医院急诊室的氧气瓶中，氧气的密度为5 kg/m 3，给急救病人供氧用去了氧气质量的一半，则瓶内剩余氧气的密度是kg/m 3；病人需要冰块进行物理降温，取450g 水凝固成冰后使用，其体积增大了cm3。（冰=0

49、.9 103kg/m 3）20在一标准大气压下，把体积为 2L，温度为 20的水烧至沸腾，水至少需要吸收J的热量。若不计热量损失，需要燃烧kg 干木柴。（q干木柴=1.2 107 J/kg）文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7

50、文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L1M7 HF5V1Y2E5A2 ZQ3N3O10U8F7文档编码:CS9H8D8L