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山西省2023-2024学年度第二学期初一素养形成期末调研测试-(物理)试卷答案试卷答案

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A.HowCOVID-19changesartB.MovingartfullythroughcrisesC.EssentialsofSymphonyNo.9D.HowtoappreciateartsinnewwaysDTheruinsofahugeMayacityhavebeendiscoveredinGuatemalawiththehelpoftheremotesensingtechniqueLiDAR,accordingtotheNationalGeographiconThursday.ThisbreakthroughwaspossiblethankstoLiDARsensors,whichcansurveylandscapesin3Dbyreflectinglaserpulsesoffthegroundfromunmannedairvehiclesandothers.LiDARisexceptionallyusefulfordetectingarchaeologicalsites,asitgetsthroughjunglesandotherfeaturesthatholdupexplorationontheground.Thetechniquehasbeentheactivator(ofmanydiscoveriesinrecentyears.Forinstance,majorfindsatAngkor,CambodiaandCaracol,Belizecanexplainwhatitdid.ThislargelostcityenvelopssiteslikeTikal,Holmul,andWitzna-knownfortheirtemplesandpyramids-butshowsthatthesefamousheritageareasarethetipoftheicebergofthislosturbannetwork.HiddenunderthejunglesoftheMayaBiosphereReserve,morethan60,000human-madefeatures-homes,canals,highways,someofwhichcanevenreachthemodernizedstandard-havebeenidentifiedbyaninternationalcooperationofresearchersheadedbythePACUNAMFoundation,aMayaculturalandnaturalheritageorganization.ThosehaveexpertsrethinkingtheoutlinesandcomplexityoftheMayaempire.Theseancientpeoplesobviouslyestablishedtheseimaginativeculturesbasedontheirknownrelics,butthenewresearchhasshownthatthescaleofthislostsocietyisfarbeyondwhatexpertshadimagined.Thefindingswillbeexploredinanhour-longdocumentarycalledLostTreasuresoftheMayaSnakeKings,premiering(Tuesday,February6ontheNationalGeographicChannel.9

山西省2023-2024学年度第二学期初一素养形成期末调研测试-(物理)试卷答案第一部分

山西省2023-2024学年度第二学期初一素养形成期末调研测试-(物理)试卷答案

15.(7分)近期多地遭遇降雪天气,雪后树枝上形成了美丽的冰溜,如图所示。某时刻,一断裂的冰溜落向地面,到达地面前的最后1s内,冰溜的平均速度大小v=10m/s。。已知冰溜断裂时的初速度可视为零,下落过程中忽略空气阻力,且可视为质点,重力加速度g取(1)冰溜到达地面前的最后1s内下落的高度h;10m/s^2。。求:(2)冰溜在空中下落的时间t和开始下落时离地面的高度H。

山西省2023-2024学年度第二学期初一素养形成期末调研测试-(物理)试卷答案第二部分（待更新）

6.如图所示,在光滑绝缘水平面上MN右侧有垂直纸面向外的匀强磁场,磁感应强度大小为B,金属线框AECD放在水平面上,线框ACD部分对照正弦图像弯制而成,形状为完整正弦图像的一半,D点为离AC边最远的点,E为AC中点.现使线框以速度v0匀速进入磁场,线框运动过程中AC边始终与MN垂直.已知AC=2DE=2d,线框的电阻为R,则线框进入磁场的过程中产生的焦耳热为M