[今日更新]重庆市好教育联盟2024届高三年级上学期12月联考.物理试卷答案

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[今日更新]重庆市好教育联盟2024届高三年级上学期12月联考.物理试卷答案试卷答案

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betaken.Therestwilltakecareofitselfifyoukeepatit.Onestepatatime.That'sthesecret.Thenhewrotedownanoldmottoontheblackboard-thelongestjourneystartswithasinglestep.Havingheardhisstaircaseanalogy(),weunderstoodwhyheaskedusthequestionandwesawhiminanewlight.Mostofmyclassmatesscoreddistinctions(成绩优异)inmaths.AndIwentontobecomeanEnglishteacher.Tothisday,wheneverIpassonMrIyer'sinvaluableadvicetomyownstudents,theybrightenupattheprospectofalighteracademicburden24.Whatisthemainideaofthefirstparagraph?A.ThewayMrIyertaughthisstudentsmaths.B.Thereasonwhymathswashardfortheauthor.C.Thestudents'pointsofviewonMrIyer'scharacter.D.Thebriefintroductionoftheauthor'smathsteacher,Mrlyer.25.WhydidMrIyerstopsolvingamathematicalprobleminclass?A.Mrlyerwasalittletiredandwantedtohavearest.B.Somestudentsmadetroubleandaffectedtheclass.C.Themathematicalproblemwasratherpuzzling.D.Somestudentsseemedimpatientandupset.26.Whatisthesecretofreachingone'sgoalaccordingtoMrlyer?A.Thereisonlyonestepbetweensuccessandfailure.B.Takeactionquicklyandmakeprogresslittlebylittle.C.Itisimportanttomakeuseofagoodopportunity.D.Don'thesitatetoaskforhelpwhenmeetingwithbarriers.27.HowdoestheauthorlikeMrIyer'sadvice?::A.Strangeandimpractical.B.Incorrectandmisleading.C.Meaningfulandvaluable.D.SimpleanduninterestingODifferentweathermakespeoplefeeldifferent.Itinfluenceshealth,intelligenceandfeelings.InAugust,itisveryhotandwetinthesouthernpartoftheUnitedStates.Peopletherehavehearttroubleandotherkindsofhealthproblemsduringthismonth.IntheNortheastandtheMiddleWest,itisveryhotatsometimesandverycoldatothertimes.PeopleinthesestateshavemorehearttroubleaftertheweatherchangesinFebruaryorMarch.Theweathercanalsoinfluenceintelligence.Forexample,ina2018reportbyscientists,IQsofagroupofstudentswereveryhighwhenaverystrongwindcame,butafterthestrongwind,theirIQswere10%below.Thewindcanhelppeoplehavemoreintelligence.Veryhotweather,ontheotherhand,canmakeitlower.StudentsinmanyschoolsoftheUnitedStatesoftengetworseonexamsinthehotmonthsoftheyear(JulyandAugust).Weatheralsohasastronginfluenceonpeople'sfeelings.Wintermaybeabadtimeforthinpeople.Theyusuallyfeelcoldduringthesemonths.Theymightfeelunhappyduringcoldweather.Butfatpeoplemayhaveahardtimeinhotsummer.Atabout18C,peoplebecomestronger.Lowairpressuremaymakepeopleforgetful.Peopleleavemorebagsonbusesandinshopsonlow-pressuredays.Thereis"goodweather"forworkandhealth.Peoplefeelbestatatemperatureofabout18C.Areyoufeelingsad,tired,forgetful,orunhappytoday?Itmaybetheproblemofweather.28.WhendopeopleintheNortheastinAmericahavemorehearttrouble?A.InFebruary.B.InJuly.C.InAugust.D.InNovember.29.Whichisnotmentionedinthetextaboutwhatweatherhasaneffecton?A.People'shealth.B.People'sappearance.C.People'sintelligence.D.People'sfeelings.

13.(10分)如图所示,两平行金属导轨间的距离L=0.40m,,金属导轨所在的平面与水平面的夹角=37^,在导轨所在平面内分布着磁感应强度大小B=0.50T、方向垂直于导轨所在平面向上的匀强磁场。金属导轨的一端接有电动势E=12V、内阻r=0.50Ω的直流电源,现把一个质量m=0.080kg的导体棒ab放在金属导轨上,导体棒恰好保持静止,导体棒与金属导轨垂直且接触良好,导体棒与金属导轨接触的两点间的电阻R=2.5Ω,,金属导轨的电阻不计,最大静摩擦力等于滑动摩擦力,取重力加速度大小g=10m/s^2,37^=0.60,37^=0.80,求:2×0.4=0.8(1)导体棒受到的安培力;(2)导体棒与金属导轨间的动摩擦因数00.5×40.64

(2)用两个相同的装置加热初温、质量均相同的水和煤油,根据实验数据绘制的水和煤油温度随时间变化的关系图像如图乙所示,实验中通过观察(选填“温度变化的多少”或“加热时间的长短”)来比较水和煤油的吸热能力,由图可知,(选填“水”或“煤油”)的吸热能力更强。

10.阳光明媚的中午,小明同学把一块长木板放在院子里,调整倾斜角度,使阳光刚好和木板垂直。在斜面顶端固定一个弹射装置,把一个质量为0.1kg的小球水平弹射出来做平抛运动。调整初速度大小,使小球刚好落在木板底端。然后使用手机连续拍照功能,拍出多张照片记录小球运动过程。通过分析照片,小明得出:小球的飞行时间为0.4s;小球与其影子距离最大时,影子A距木板顶端和底端的距离之比约为7:9,如图所示。已知重力加速度g=10m/s^2,,空气阻力不计。下列说法正确的是A.小球抛出0.1s后与其影子的距离最大B.飞行过程中,重力对小球做的功为0.8JC.小球飞行过程中动量变化率的大小为1ND.木板长度为1.4m