[今日更新]山西省2023-2024学年第二学期八年级期中双减教学成果展示.物理试卷答案

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[今日更新]山西省2023-2024学年第二学期八年级期中双减教学成果展示.物理试卷答案试卷答案

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天一大联考2022一2023学年高三年级上学期期中考试英语·答案听力原文Text1W:Hi,Mark.Howiseverything?M:I'mabitbusyrightnow.We'vegotguestscomingfortheweekendandthehouseissountidy.Maggie,youknow,Ihatehousework.Text2W:Itlooksasifit'sgoingtorain.You'dbetterlookforyourumbrella.M:Yeah,Ithinkit'sdefinitelygoingtorain.That'swhyI'mnotgoingout.Text3W:Thismachinehassomanybuttons.Ican'tfigureoutwhichonemakesit.M:Well,you'dbetterreadtheinstructionsfirst.Pressingthebuttonsimproperlymaycausethemachinetobreakdown.W:Oh,Isee.Text4M:What'sthebestwaytodowntown?W:Ifyou'reinahurry,youshouldtakeataxi.M:I'minnoparticularhurry.W:Well,inthatcase,takeanairportbusthen.M:Thatcannotbeabetteridea.Text5W:Jack,haveyougotthebookIaskedyoutoborrowtheotherday?M:Sorry,Ihaven't.Icouldn'tfindtimetogotothelibrary.Text6M:Hi,Rose.You'vebeenlookingforhousesformonths.Can'tyoufindone?W:Well,Ishouldbecarefulaboutchoosingone.It'sabigsteptobuyahouse.I'drathertakemytimenowthanbesorrylater.TIANYICULTUR目M:That'sright.Therearealotofhousesforsaleneartheuniversity.W:I'vebeenthere,verybeautifulhouses,butIpreferoldbutbighouses.Weneedlotsofrooms,youknow.AndIthinkIhadbetterbuyanoldhouse.M:However,acheaphousemeansfewmodernconveniences.Whynotgetanewone?W:Jeffcandecoratetheoldone.Youknow,he'ssoskillful.Someofthenewhousesnowhaveverysmallrooms.Idon'twanttospendtherestofmylifeinthem.M:Aren'tyoutiredofkeepingsomanyroomscleaneveryday?W:Notatall.Cleaningisapleasureforme.Oh,herecomesmybus.Bye!Text7M:Nowwehavefive-dayclasseseveryweek,sowehavemoresparetimethanbefore.一1

3.近来,交警部门开展的“车让人”活动深入人心,不遵守“车让人”的驾驶员将受到严厉处罚.假36km/h设一辆以36km/h的速度匀速行驶的汽车即将通过路口,此时一老人正在过人行横道,汽车的车头距离人行横道14m.若该车减速时的最大加速度为5m/s²,要使该车在到达人行横道前停止,驾驶员的反应时间不能超过5m/s^2,A.0.4sB.0.5sC.0.6sD.0.7s

15.(12分)竖直墙壁上有一质量为0.1kg的物块受到水平压力F的作用,F随时间的变化如图,已知物块在01s20m/s的速度匀速下滑,设最大静摩擦力等于滑动摩擦力,重力加速度g=10m/s^2,,求:(1)物块与墙壁间的动摩擦因数;(2)物块在1.5s末受到的摩擦力大小;(3)物块在3.5s末受到的摩擦力和加速度大小。

2.如图所示,一光滑的轻质滑轮用细绳OO^悬挂于O点;另一细绳跨过滑轮,其一端悬挂物块A,另一端与圆环B相连,圆环B套在一固定粗糙竖直杆上,圆环B在图示力F作用下处于静止状态。保持力F方向不变,适当增加力F的大小,系统始终处于静止状态,下列说法正确的是A.绳的拉力变大B.圆环B所受竖直杆弹力变大C.圆环B所受绳的拉力变大D.圆环B所受摩擦力可能增大