2019年高考物理试题及答案(含全国1卷,全国2卷,全国3卷,共3套).pdf

1 2019 年高考（全国1 卷）理综试卷物理试题二、选择题：本题共8 小题，每小题6 分。在每小题给出的四个选项中，第1418 题只有一项符合题目要求，第 1921 题有多项符合题目要求。全部选对的得6 分，选对但不全的得3 分，有选错的得0 分。14氢原子能级示意图如图所示。光子能量在1.63 eV3.10 eV 的光为可见光。要使处于基态（n=1）的氢原子被激发后可辐射出可见光光子，最少应给氢原子提供的能量为A12.09 eV B10.20 eV C1.89 eV D1.5l eV 15如图，空间存在一方向水平向右的匀强磁场，两个带电小球P和Q用相同的绝缘细绳悬挂在水平天花板下，两细绳都恰好与天花板垂直，则AP和Q都带正电荷BP和Q都带负电荷CP带正电荷，Q带负电荷DP带负电荷，Q带正电荷16最近，我国为“长征九号”研制的大推力新型火箭发动机联试成功，这标志着我国重型运载火箭的研发取得突破性进展。若某次实验中该发动机向后喷射的气体速度约为3 km/s，产生的推力约为4.8 106 N，则它在 1 s时间内喷射的气体质量约为A1.6 102 kg B 1.6 103 kg C1.6 105 kg D1.6 106 kg 17如图，等边三角形线框LMN由三根相同的导体棒连接而成，固定于匀强磁场中，线框平面与磁感应强度方向垂直，线框顶点M、N与直流电源两端相接，已如导体棒 MN受到的安培力大小为F，则线框 LMN 受到的安培力的大小为A2FB 1.5FC0.5F D0 第 1 页，共 30 页2 18如图，篮球架下的运动员原地垂直起跳扣篮，离地后重心上升的最大高度为H。上升第一个4H所用的时间为 t1，第四个4H所用的时间为t2。不计空气阻力，则21tt满足A121tt2 B221tt3 C321tt4 D421tt0）。质量为m，电荷量为q（q0）的粒子自G 的左端上方距离 G 为 h 的位置，以速度v0 平行于纸面水平射入电场，重力忽略不计。（1）求粒子第一次穿过G 时的动能，以及她从射入电场至此时在水平方向上的位移大小；（2）若粒子恰好从G 的下方距离G 也为 h 的位置离开电场，则金属板的长度最短应为多少？第 14 页，共 30 页文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O415 25.（20 分）一质量为m=2000 kg 的汽车以某一速度在平直公路上匀速行驶。行驶过程中，司机忽然发现前方 100 m 处有一警示牌。立即刹车。刹车过程中，汽车所受阻力大小随时间变化可简化为图（a）中的图线。图（a）中，0t1时间段为从司机发现警示牌到采取措施的反应时间（这段时间内汽车所受阻力已忽略，汽车仍保持匀速行驶），t1=0.8 s；t1t2时间段为刹车系统的启动时间，t2=1.3 s；从 t2时刻开始汽车的刹车系统稳定工作，直至汽车停止，已知从t2时刻开始，汽车第1 s 内的位移为24 m，第 4 s内的位移为1 m。（1）在图（b）中定性画出从司机发现警示牌到刹车系统稳定工作后汽车运动的v-t 图线；（2）求 t2时刻汽车的速度大小及此后的加速度大小；（3）求刹车前汽车匀速行驶时的速度大小及t1t2时间内汽车克服阻力做的功；司机发现警示牌到汽车停止，汽车行驶的距离约为多少（以 t1t2时间段始末速度的算术平均值替代这段时间内汽车的平均速度）？第 15 页，共 30 页文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O416（二）选考题：共 45 分。请考生从2 道物理题、2 道化学题、2 道生物题中每科任选一题作答。如果多做，则每科按所做的第一题计分。33 物理 选修 3-3（15 分）（1）（5分）如 p-V图所示，1、2、3三个点代表某容器中一定量理想气体的三个不同状态，对应的温度分别是T1、T2、T3。用N1、N2、N3分别表示这三个状态下气体分子在单位时间内撞击容器壁上单位面积的次数，则N1_N2，T1_T3，T3，N2_N3。（填“大于”“小于”或“等于”）（2）（10分）如图，一容器由横截面积分别为2S和S的两个汽缸连通而成，容器平放在地面上，汽缸内壁光滑。整个容器被通过刚性杆连接的两活塞分隔成三部分，分别充有氢气、空气和氮气。平衡时，氮气的压强和体积分别为p0和V0，氢气的体积为2V0，空气的压强为p。现缓慢地将中部的空气全部抽出，抽气过程中氢气和氮气的温度保持不变，活塞没有到达两汽缸的连接处，求：（i）抽气前氢气的压强；（ii）抽气后氢气的压强和体积。34 物理 选修 3 4（15分）（1）（5分）如图，长为l的细绳下方悬挂一小球a。绳的另一端固定在天花板上O点处，在 O点正下方34l的O处有一固定细铁钉。将小球向右拉开，使细绳与竖直方向成一小角度（约为2）后由静止释放，并从释放时开始计时。当小球a摆至最低位置时，细绳会受到铁钉的阻挡。设小球相对于其平衡位置的水平位移为 x，向右为正。下列图像中，能描述小球在开始一个周期内的x-t关系的是 _。（2）（10分）某同学利用图示装置测量某种单色光的波长。实验时，接通电源使光源正常发光：调整光路，使得从目镜中可以观察到干涉条纹。回答下列问题：（i）若想增加从目镜中观察到的条纹个数，该同学可_；A将单缝向双缝靠近B将屏向靠近双缝的方向移动C将屏向远离双缝的方向移动D使用间距更小的双缝（ii）若双缝的间距为d，屏与双缝间的距离为l，测得第1条暗条纹到第n条暗条纹之间的距离为 x，则单色光的波长=_；（iii）某次测量时，选用的双缝的间距为0300 mm，测得屏与双缝间的距离为1.20 m，第 1条暗条纹到第 4条暗条纹之间的距离为7.56 mm。则所测单色光的波长为_nm（结果保留 3位有效数字）。第 16 页，共 30 页文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O417 2019 年普通高等学校招生全国统一考试全国2 卷理科综合物理部分参考答案14 D 15 C 16A 17B 18AD 19BD 20AC 21AD 22.（1）sincosgag（2）0.35 23（1）5.00 变小增大B（2）2.8 24解：（1）PG、QG 间场强大小相等，均为E，粒子在 PG 间所受电场力F 的方向竖直向下，设粒子的加速度大小为a，有2EdF=qE=ma设粒子第一次到达G 时动能为Ek，由动能定理有2k012qEhEmv设粒子第一次到达G 时所用时间为t，粒子在水平方向的位移为l，则有212hatl=v0t联立式解得2k012=2Emvqhd0mdhlvq（2）设粒子穿过G 一次就从电场的右侧飞出，则金属板的长度最短，由对称性知，此时金属板的长度L 为0=22mdhLlvq25解：（1）v-t 图像如图所示。（2）设刹车前汽车匀速行驶时的速度大小为v1，则 t1时刻的速度也为v1，t2时刻的速度也为v2，在 t2时刻后汽车做匀减速运动，设其加速度大小为a，取 t=1s，设汽车在t2+n-1 t 内的位移为sn，n=1,2,3,。若汽车在t2+3 tt2+4 t 时间内未停止，设它在t2+3 t 时刻的速度为v3，在 t2+4 t 时刻的速度为v4，由运动学有2143()ssat2121()2svtat424 vva t联立式，代入已知数据解得417m/s6v这说明在t2+4 t 时刻前，汽车已经停止。因此，式不成立。由于在 t2+3 tt2+4 t 内汽车停止，由运动学公式323 vva t2432asv11第 17 页，共 30 页文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O418 联立，代入已知数据解得28 m/sa，v2=28 m/s或者2288m/s25a，v2=29.76 m/s（3）设汽车的刹车系统稳定工作时，汽车所受阻力的大小为f1，由牛顿定律有f1=ma 在 t1t2时间内，阻力对汽车冲量的大小为1211=()2If tt由动量定理有12Imvm由动量定理，在t1t2时间内，汽车克服阻力做的功为22121122Wmvmv联立1112式，代入已知数据解得v1=30 m/s1351.1610 JW14从司机发现警示牌到汽车停止，汽车行驶的距离s约为221 112211()()22vsvtvvtta15联立1315，代入已知数据解得s=87.5 m1633（15 分）（1）大于等于大于（5分）（2）10 分（i）设抽气前氢气的压强为p10，根据力的平衡条件得（p10 p）2S=（p0 p）S得 p10=12（p0+p）（ii）设抽气后氢气的压强和体积分别为p1和 V1，氢气的压强和体积分别为p2和 V2，根据力的平衡条件有p2 S=p1 2S由玻意耳定律得p1V1=p10 2V0p2V2=p0 V0由于两活塞用刚性杆连接，故V1 2V0=2（V0 V2）联立式解得第 18 页，共 30 页文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O419 101124ppp00104=2ppVVpp（）34（15 分）（1）A（5 分）（2）10 分（i）B（ii）1x dnl（）（iii）630 第 19 页，共 30 页文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 ZK8T1S6R6O4文档编码:CK9I1K4R2D8 HL5X2O10I6U6 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