2022年中考物理试题分类汇编动能势能机械能及其转化2 .pdf

武汉市九年级 4 月调考物理试题一、选择题（本题包括12 小题，每小题只有1 个正确选项。每小题3 分，共 36 分）9、学生们正在教室内上课，为了减小校园外汽车的噪声干扰，下列措施可行的是A、老师讲课的声音大一些B、在教室周围植树C、每个学生都带一个防噪声耳罩D、在教室内安装噪声监测装置10、关于运动和静止，下列说法正确的是A、“天宫一号”与“神舟八号”成功对接时，以“天宫一号”为参照物，“神舟八号”是静止的B、飞机在空中加油，以受油机为参照物，加油机是运动的C、汽车在马路上行驶，以路灯为参照物，汽车是静止的D、小船顺流而下，以河水为参照物，小船是运动的11、如图所示，将凸透镜看作是眼睛的晶状体，光屏看作是眼睛的视网膜，烛焰看作是被眼睛观察的物体。拿一个远视眼镜给“眼睛”戴上，光屏上出现烛焰清晰的像，而拿走远视眼镜则烛焰的像变得模糊。在拿走远视眼镜后，为了能在光屏上重新得到清晰的像，下列操作可行的是A、将蜡烛靠近凸透镜B、将光屏靠近凸透镜C、将光屏远离凸透镜D、将光屏和蜡烛同时靠近凸透镜12、下列说法错误的是13、北京奥运会的所有运动场馆都安装了光纤网络，场馆中光纤的主要用途是A、输电 B、通信 C、导热 D、照明14、如图所示，在探究“什么情况下磁可以生电”的实验中，保持磁体不动，则下列现象描述正确的是A、导线 ab 竖直向上运动时，灵敏电流计指针会偏转B、导线 ab 竖直向下运动时，灵敏电流计指针会偏转C、导线 ab 从图中所示位置斜向上运动时，灵敏电流计指针会偏转D、导线 ab分别水平向右和水平向左运动时，灵敏电流计指针偏转的方向相同15、某同学利用天平和量筒测量盐水的密度，下列操作步骤中不必要的是A、用天平测出空烧杯的质量B、将盐水倒入烧杯中，用天平测出烧杯和盐水的总质量C、将烧杯中的盐水倒入量筒中一部分，测出量筒中盐水的体积D、用天平测出烧杯和剩余盐水的总质量16、某种活动黑板的示意图如下，两块形状相同的黑板的重力均为G，其上端分别用两根绕过两只定滑轮的细绳相连。当其中一块黑板沿竖直方向匀速运动时，另一块黑板同时做等速反向运动，不计一切摩擦力，每根绳的拉力为A、0 B、G/2 C、GD、2G17、下图是楼房顶上常见的导气管，它的作用是将每家住户洗手间下水道中的污浊气体排出。下列关于导气管的描述最合理的是文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2A、导气管利用浮力将密度小于空气的污浊气体导出B、导气管利用流速和压强的关系，在楼底管道产生低气压C、在有风的天气里导气管排气效果会变差D、导气管利用流体中流速大的地方压强小的原理，将污浊气体排出18、如图所示，先用绳子把一个铁锁悬挂起来，然后把铁锁拿近自己的鼻子，稳定后松手，头不动，铁锁向前摆去又摆回来，直到最后停下。下列说法正确的是A、铁锁摆回后能碰到鼻子B、铁锁下降过程中，重力势能全部转化为动能C、铁锁的机械能始终不变D、铁锁第一次摆动到最低点时，动能最大19、在一个高为h、长为 L 的斜面上，用沿斜面向上的力F 把重为 G 的木块匀速向上拉的过程中，如果斜面的机械效率为，则木块和斜面间的摩擦力表达式错误的是A、F（1-）B、GLhFC、GLh)1(D、FhL20、某同学利用图甲所示的电路测量小灯泡的电功率。电路中电源电压保持4.5V 不变，灯泡上标有“3V，1W”字样。闭合开关，将滑片P 滑到某一位置时，电压表的指针指示的位置如图乙所示。下列说法错误的是文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2A、灯泡的额定功率为1W B、灯泡正常发光时的电阻为9C、灯泡的实际功率为0.64W D、此时灯泡和滑动变阻器的阻值之比为8：7 二、非选择题（本题包括8 小题，共 40 分）21（4 分）如图所示，在打火机出气孔处加接了一根长约10cm 的导气管，在导气管外部中央滴了一滴水，然后打开打火机气阀，在导气管末端点燃排出的气体，不到一分钟的时间，导气管外的水滴就变成了冰粒。（1）导气管外的水滴变成冰粒，原因是气阀打开后，液态的丁烷汽化并（填“吸热”或“放热”），使附着在导气管外部的水滴（填一种物态变化名称）成冰粒。（2）导气管末端的丁烷气体燃烧时，能转化为能。22（3 分）小明穿着运动鞋跑步，一只脚不慎踩住了另一只脚上松开的鞋带，由于向前摔倒了。老师提醒他鞋带经常松开的原因很可能与摩擦力有关，于是小明想到了两种解决的办法：一是系鞋带时尽量拉紧，这是通过的方法增大摩擦力；二是将尼龙鞋带换成纯棉鞋带，这是通过的方法增大摩擦力。23（4 分）20XX年 7 月 28 日，我国首台自主设计、自主集成的“蛟龙号”载人潜水器创造了5188m的我国载人深潜新纪录。（1）潜 水 器 下 潜 得 较 快 时，10min下 潜 了420m，这 段 时 间 内 潜 水 器 下 潜 的 平 均 速 度 为文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2m s-1。（2）此次试验到达最大下潜深度时，潜水器受到海水的压强约为Pa。（3）质量约为22t 的“蛟龙号”潜水器匀速下潜时，受到的浮力约为N。到达最大下潜深度时，潜水器抛弃压载铁，潜水器减小的重力它减小的浮力，潜水器开始上浮。24（5 分）如图所示是“探究平面镜成像的特点”的实验。（1）小心移动蜡烛B，直到与点燃的蜡烛A 的像完全重合，这说明像与物的大小；进一步观察A、B 两支蜡烛在刻度尺上的位置发现，像和物的连线与玻璃板，像和物到玻璃板的距离。（2）当玻璃板后面的蜡烛B 与蜡烛 A 的像完全重合时，移去蜡烛B，并在蜡烛B 所在位置放一光屏，发现光屏上承接到蜡烛 A 的像，这说明平面镜所成的是像。25（3 分）为了比较水和食用油的吸热能力，某同学用如图所示的装置按下列步骤进行了实验：A在两个同样的烧杯中，分别装入等体积的水和食用油；B用温度计分别测出水和食用油的初温；C用两个相同的酒精灯对水和食用油加热相同的时间；D用温度计分别测出水和食用油的末温。请你回答下列问题：（1）上述实验步骤中，存在错误的是：。（2）类似的实验发现：不同的物质在相等、相同时，吸收的热量通常是不同的，即每种物质都有自己的比热容。26（6 分）某同学利用如图甲所示的电路探究通过电阻R 的电流 I 跟它两端电压U 的关系，已知电源电压为 6V 且保持不变。文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2（1）请根据图甲将图乙所示的实物电路连接完整(导线不允许交叉)。（2）实验中多次调节滑动变阻器的滑片，改变电阻R 两端的，记下的示数，得到如图丙所示的 UI 关系图象。（3）上述实验中刚闭合开关时，电压表的示数为，电流表的示数为。27（7 分）图甲是一种常见的用电器电吹风，它既可以吹热风，又可以吹冷风。（1）图乙是电吹风的电路示意图，图中开关所在的位置（阴影部分）表示触点O 与触点 1、2 同时接通。请你分别在方框a、b 中填入合适的元件名称“电热丝”或“电动机”。（2）电吹风的部分参数如下表所示，当电吹风正常吹热风时，通过电热丝的电流及其1min 内产生的热量分别为多少？额定电压220V 冷风功率120W 热风功率1000W 电源频率50Hz 文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O228（8 分）平推杠铃架是一种健身器材，结构如图所示，其中直杆ABCD 是质量分布均匀的圆柱体状杠铃杆。训练时人平躺在长凳上，双手将杠铃杆反复向上推起，起到锻炼身体的作用。（1）请在图中画出杠铃杆的重力的示意图。（2）杠铃杆两侧可以装配杠铃片，杠铃片按质量可分为5kg、10kg、15kg、20kg、25kg 共 5 种型号。往空的杠铃杆上安装杠铃片时，先将一个杠铃片套在杠铃杆的一端，再将这个杠铃片水平向里推到图示位置，然后在杠铃杆的另一侧安装一个相同的杠铃片。试通过计算说明，在上述安装过程中，为了不使杠铃杆翻转，杠铃杆的质量至少应为多大？（3）某人在一次健身时，20s 内向上推举了10 次杠铃杆，已知杠铃杆和杠铃片的总质量为80kg，如果每次推举时手斜向上移动了50cm，杠铃杆上升的高度为40cm，那么他在这次健身时推举做功的功率约为多少？文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2文档编码:CY9H6S7X9A7 HU4I8I5B1O9 ZO1I7D7L4O2参考答案一、选择题（本题包括12 小题，每小题只有1 个正确选项。每小题3 分，共 36 分）题号9 10 11 12 13 14 15 16 17 18 19 20 答案B A C C B C A B D D D C 二、非选择题（本题包括8 小题，共 40 分）21、（4 分）（1）吸热；凝固（2）化学；内22、（3 分）惯性；增大压力；增大接触面的粗糙程度23、（4 分）（1）0.7 （2）5.188 107（3）2.2 105；大于24、（5 分）（1）相等；垂直；相等（2）不能