[今日更新]重庆市高2024届高三第八次质量检测(5月).物理试卷答案

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[今日更新]重庆市高2024届高三第八次质量检测(5月).物理试卷答案试卷答案

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43.Theweatherinwasthehottest.A.BeijingB.SingaporeCityC.HongKongD.Sydney(B)WiththedevelopmentofscieneechnoloydcionthefuturewillbeverydifferenPeoplewillusetheInternetmoretotakeclassesindifferentsubjectsindifferentplaces.Forexample,studentsmaytakeamathlessononline,upload(theirhomeworklaterandthensendittotheirteacherbyemail.Also,studentswillbeabletostudyatfamousuniversitiesinothercountrieswithoutleavinghome.Inthisway,studyingwillbecomemucheasier.What'smore,peoplewillspendmoretimestudying.Inthefuture,peoplewillchangetheirjobsoften.Manyofthemwillhavethreeorfourdifferentjobs.Sotheywillhavetogobacktoschooltoimprovethemselves.Asaresult,theywillmeetclassmatesofdifferentages.Whataboutthesubjectsatschoolinthefuture?Willtheychange?Yes,ofcoure.Childrenwillusecomputersatschoolfromtheverybeginning.Foreignlanguageswillbemoreimportantthen.Allchildrenwillleamtwoorthreelanguages.Theirabilitiestoearlanguageswillbegreat.Soitwillbeagoodideaforchildrentolearnmorelanguagesfromanearlyage.Inaword,educationwillbecomeeasierinthefuture.44.ThewriterthinksstudyingatfamousuniversitiesinothercountrieswillbeA.harderB.worseC.simplerD.stricter45.PeopleofdifferentageswillappearatschooltoA.improvethemselvesB.visittheirfavoriteschoolC.makenewfriendsD.testthemselves46.Inwhichpartofanewspapercanyoureadthispassage?A.HealthB.Education.C.Sports.D.Art.(C)To:XiaoLiSubject:AtravelplantoXi'anDearXiaoLi,MytimehereinChinaisgoingwell.Ilovemynewschoolandclassmates.OvertheOctoberholiday,myparentsandIareplanningtogotoXi'antoseetheTerracottaArmy.I'veheardthatitisanamazingsight,andIcan'twaittogo.Tome,thestoryoftheTerracottaArmyisalmostincredible.It'samazingthattherearemorethan8,000statues()andnooneinmoderntimesknewaboutthemuntilthe1970s.We'realsoplanningtovisitseveralotherplacesinXi'an.MydadandIarebothlookingforwardtogoingtotheShaanxiHistoryMuseum,becausemydadloveshistoryandIhaveheardthatthismuseumisknownasa"Chinesetreasurehouse"!We'realsogoingtotheXianCityWallandafewotherfamoussights.We'retakingthetrain,leavingthedaybeforetheOctoberholidaybegins.We'rearrivingat9:30a.m.andwillstartsightseeingrightaway,soIhopewesleepwellonthetrain!Iguessthat'sallfornow!I'llwriteagainsoonandsendphotos!Doyouhaveanyplansforthe线comingholiday?Hopetohearfromyousoon.Yourfriend,Richard47.Whatkindofwritingisthetext?C.Email.D.Story.A.Ad.B.News.九年级英语期中试题第4页共8页

4.如图所示,水平轨道AB与光滑圆弧轨道在B点平滑连接,圆弧轨道半径为R,轨道AB的长度L=3R,轨道ABC在同一竖直平面内,整个装置处在水平向右的匀强电场中,电场强度大小为E。现将质量为m、电荷量为q的带正电滑块(可视为质点)从A点静止释放。已知重力加速度为g,qE=mg,滑块与轨道AB间的动摩擦因数=0.5,滑块所带电荷量始终不变,则滑块从A点运动到最高点的过程中机械能增加了A.2.5mgR(B3.5mgRC.4mgRD.5.5mgR

16.(8分)激光器发光功率为P,,所发射的一束水平平行光束在空气中的波长为,光束的横截面积为S,垂直射到放在光滑水平面上的理想黑色物体的竖直表面上,光被完全吸收。光束的照射时间为t,物体的质量为m,光子的动量p=h,,空气中光速为:(1)物体在光照射时产生的光压(光子作用力产生的压强)。(2)物体获得的速率和增加的内能。

4.如图甲所示,港珠漠大桥的人工岛创新围岛填土在世界范围内首次提出深插式钢圆筒快速成岛技术,即起重船吊起巨型钢筒直接固定在海床上插入到海底,然后在中间填土形成人工岛。如图乙所示,每个钢圆筒的半径为R,质量为m,由10根长度均为2R的特制起吊绳通过液压m机械抓手连接在钢筒边缘的10个等分点处,另一端汇聚在挂钩上,图乙中仅画出两根起吊绳。不考虑起吊绳和机械抓手的重力,已知重力加速度为g,则A.钢圆筒竖直向下匀速运动时,每根起吊绳的拉力大小为330mgB.钢圆筒以大小为a的加速度竖直向下加速运动时,每根起吊绳的拉力大小为3mg15C.钢圆筒以大小为a的加速度竖直向下减速运动时,每根起吊绳的拉力大小为D.钢圆筒以大小为a3m(g+a)15的加速度水平向左加速运动时,所有起吊绳对圆钢桶的作用为m