2022衡水金卷先享题信息卷山东专版英语二答案

2022衡水金卷先享题信息卷山东专版英语二答案，目前衡水金卷答案网已经汇总了2022衡水金卷先享题信息卷山东专版英语二答案的各科答案和试卷，更多衡水金卷答案请关注本网站。

16、解析(1)甲、乙的运动轨迹如图所示,由几何关系可知△MNO1为正三角形,故乙绕圆心O1做圆周运动的半径为:R=2L2分B洛伦兹力提供乙做圆周运动所需的向心力,有:qB=m1分R解得B=mP甲O分M乙乙从M点运动到N点的时间为:r=(2x=20R1分10丌L解得分31(2)甲从P点运动到N点的过程中做类平抛运动,由于甲、乙恰好在N点发生正碰,故碰撞前瞬间甲的方向与y轴正方向的夹角为6,设甲的初速度大小为、加速度大小为a,有:- 0= tan 8分L分Xo=vor分根据牛顿第二定律有qE=na分解得x0=3my2分(3)设碰撞前瞬间甲的速度大小为v(以的方向为正方向),碰撞后甲、乙的速度分别为′、y’,根据守恒定律有:m-m=m′+my1分根据机械能守恒定律有:1m2+11v分解得=11分由几何关系可知:其中由(2)可得分5丌碰撞后乙先在磁场中做匀速圆周运动,从y轴上的A点进入电场区域,由几何关系可知,A、N两点间离即乙做圆周运动的半径r,有:qvB=m1分经分析可知y=L+r1分45丌

第二节书面表达One possible versionThank you for your paying attention to the English Corner in our school. Here is something about it. The EnglishCormer is held after 5 o'clock in the afternoon every Fridaybeside the school library. The purposes for us to hold theComer are to improve the students'spoken English and letthem make more friends. Students can share their differentand useful learning experience. Talking about commoninterests is also a good choice. Whats more, students candiscuss any topic that is interesting and easy to talk aboutWed like to invite you to our English Corner and yourfriends are also warmly welcomYoursLi Hua