2021攀枝花高三第二次统一考试理科综合试题PDF版含答案

这是一份2021攀枝花高三第二次统一考试理科综合试题PDF版含答案，文件包含2021届四川省攀枝花市高三第二次统一考试理科综合试题pdf、2021届四川省攀枝花市高三第二次统一考试理科综合物理参考答案doc、2021届四川省攀枝花市高三第二次统一考试理科综合化学参考答案doc、2021届四川省攀枝花市高三第二次统一考试理科综合生物参考答案doc等4份试卷配套教学资源，其中试卷共21页， 欢迎下载使用。
攀枝花市高2021级高三第二次统一考试物理理综(物理)参考答案及评分标准 Ⅰ卷选择题(每小题全对6分，对而不全3分，有错或不答的0分，满分48分)14．D  15．A  16．B 17．C 18．D 19．CD  20．AB    21．AC Ⅱ卷 22．(6分) （1）b (2分)  （2）0.56(2分)，0.54 (2分)23．（9分）（1）A2 (1分) （2）a(1分) （3）如图 (2分)       （4）4(1分)（5）c(2分)（6）如图(2分)24．(13分) 解：（1）设小球P到达B点速度为，从A滑到B的过程中， 由动能定理有：         ····················································（1分）  小球P过B点时，由向心力公式有：·····························（2分）解得：··················································（1分）由牛顿第三定律得小球P过B点时对轨道的压力：···················（1分）（2）  设小球P的反弹速度大小为v2 由动能定理有：············································（2分） 设P、Q碰后，Q的速度大小为v3，在P与Q碰撞过程中，由动量守恒有： ·················································（2分） 设Q在滑行过程中最大距离为x，由动能定理有：        ····················································（2分）  解得：··················································(2分）25．(19分) 解：（1）由题意可知，合力沿ef方向。·······························(1分)······················································(1分)·······················································(1分)(2)设微粒平抛的初速度为，从p到e用时为t1，竖直方向位移，水平位移为，到达e点时速度，竖直方向速度分别，由平抛运动规律及题意有········································（1分）········································（1分）········································（1分）········································（1分）········································（1分） ········································（1分）p、d间的距离为y········································（1分）解得：···································（1分）（3）电场改变后的电场力·········································(1分)可得：····································(1分)粒子进入电场后所受合力沿cd方向向下，做类平抛运动，设粒子的加速度为a，通过矩形区域的时间为t2，由牛顿第二定律有·········································(1分)假设从ad边飞出，飞出点距d点的距离为x2，由平抛运动规律有········································· (1分)······································· (1分)········································(1分)解得：····································(1分)所以，假设合理，从ad边离开矩形区域，距d点·············(1分)33. (1) ACD (5分)(2)解：将容积A中的气体等温变到压强，体积为，由玻意耳定律有········································(4分)将的气体等温装入容器B，压强为，由玻意耳定律有········································(4分)解得：·····································(2分)34. 解：(1) ACD (5分)(2) 解：（1）由图可知：····································（1分）··································（2分）解得： ·····························（2分）（2）光路如图所示：····································（1分）         ······································（1分）····································（1分）         ·····································（1分）        解得： ································（1分）