[今日更新]2023-2024学年度云学名校新高考联盟高二年级12月联考.物理试卷答案

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thanthat.Andofcourseitcostsmuchmore.M:Sowillyouridethebusallthetime?W:Yes,Iwill.Itisalsoenvironment-friendly.Allofusshouldhaveatry.(Text7)M:Judgingbyallthetraffic,I'dsaywe'reneartheheartofthedowntownarea.W:WhatdidIdo?DidItakeawrongturn?M:I'mnotsure,butIthinkthatyouturnedleftwhenyoushouldhaveturnedright.W:Well,now,theproblemishowtogetbackontothemainhighway.M:Well,ifImayofferasuggestion...Whydon'tyoustopandaskapoliceman?W:Yeah,yeah,yeah,IthinkIseeoneupthereinthenextblock.(Text8)W:Dad,canyoulendJennyandmesomemoney?M:Forwhat?W:Wewanttogetticketsforarockconcert.We'llpayyoubackafterafewdays.M:Howmucharethetickets?W:Eighteendollarseach.M:Eighteendollars?That'salotofmoney.W:That'snotverymuchforthisband,Dad.Theyaregreatsingers,verypopular.M:Whenwillyouneedthemoney?W:Bobisalsogoingandhe'sgoingtotowntomorrowtogetthetickets.M:Allright.Here'sfiftydollars.W:Thanksalot,Dad.I'llcallBobrightnow.(Text9)W:I'veplannedatripformyholiday.M:Whereareyougoing?W:LijiangandDaliinYunnanprovince.M:Lovely!Howareyougettingthere?W:AsIdon'thavemuchtimeIthinkIneedtotravelbyair.M:That'sgoingtobeveryexpensive.Howmuchisthefare?W:About1,500yuan.M:Whenareyouleaving?W:Oneweekafterschoolfinishes.M:Soundswonderfultome.Whereareyoustaying?W:I'dliketostayintheYouthHotel.M:Thatsoundsfine.HowlongareyoustayinginLijiangandhowlonginDali?W:I'mthinkingofstayingthreedaysateachplace在、4人【23新教材·DY·英语·参考答案一R一必修第二册一N】

12.水平放置的两根足够长的光滑金属导轨相距为d,,放在垂直纸面向里的磁感应强度大小为B的匀强磁场中,一质量为m,电阻不计的导体棒MN垂直横跨在导轨上,与导轨接触良好。导轨一端分别与电源、电容器和定值电阻通过开关连接,电源的电动势为E,内阻不计,电容器电容为C,定值电阻为R。首先将开关S2与d接通给电容器充电,待电路稳定后将开关S1与b点相接,再将开关S2与c点相接,当导体棒匀速直线运动时,把开关S2与c点断开,将开关S1与a接通,导体棒运动一段距离后速度为零。下列说法正确的是()

14.(13分)如图1所示,长度L=20cm的木板静止放置在粗糙水平地面上,物块以一定的水平初速度从左端冲上木板,且恰好没有从木板上滑下。从物块冲上木板开始计时,木板的v-t图像如图2所示,物块可视为质点,重力加速度g取10m/s^2,最大静摩擦力等干滑动摩擦力。求:(1)物块与木板间的动摩擦因数1和木板与地面间的动摩擦因数2;(2)物块质量m与木板质量M的比值。

(1)图(b)是根据表格数据绘制的“m-x”图线,其中AB段为曲线、BC段为直线,则该弹簧在(填“OA”“AB”或“.BC')段满足胡克定律;F=k×mg:4xm=5&9×