高一下学期第一次质量抽查物理试题 缺答案.docx
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高一下学期第一次质量抽查物理试题 缺答案.docx
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高一下学期第一次质量抽查物理试题缺答案
2019-2020年高一下学期第一次质量抽查物理试题缺答案
一、选择题(每题3分,共36分)
1、下列说法正确的是……………………………………………………( )
A.做匀速圆周运动的物体处于平衡状态
B.做匀速圆周运动的物体所受的合外力是恒力
C.做匀速圆周运动的物体的速度恒定
D.做匀速圆周运动的物体的加速度大小恒定
2、做匀速圆周运动的物体,所受到的向心力在大小,下列说法正确的是…………( )
A.与线速度的平方成正比B.与角速度的平方成正比
C.与运动半径成正比D.与线速度和角速度的乘积成正比
3.水平放置的圆盘,可绕垂直于盘面的竖直轴O转动,在圆盘上有一木块P,当圆盘沿顺时针做匀角速转动时,木块P随盘一起运动而无相对滑动,右图为俯视图,图中四个箭头是画在圆盘上的,其中a.c在一半径上,而b.d与半径垂直,则圆盘对P的摩擦力方向
A.与a箭头一致B.与b箭头一致
C.与c箭头一致 D.与α箭头一致
4.弹簧振子作简谐振动时,以下说法不正确的是…………………………()
(A)振子通过平衡位置时,回复力一定为零;
(B)振子作减速运动,加速度却在增大;
(C)振子向平衡位置运动时,加速度方向与速度方向相反;
(D)振子远离平衡位置运动时,加速度方向与速度方向相反。
5.质量为m的小球在竖直平面内的圆形轨道的内侧运动,经过最高点而不脱离轨道的最小速度是v,则当小球以2v的速度经过最高点时,对轨道压力的大小是().
(A)0(B)mg(C)3mg(D)5mg
6.一轻杆一端固定质量为m的小球,以另一端O为圆心,使小球在竖直平面内作半径为R的圆周运动,如图所示,则().
(A)小球过最高点时,杆所受弹力可以为零
(B)小球过最高点时的最小速度是
(C)小球过最高点时,杆对球的作用力可以与球所受重力方向相反,此时重力一定大于杆对球的作用力
(D)小球过最高点时,杆对球的作用力一定跟小球所受重力的方向相反
7、质点做匀速圆周运动时,下列说法正确的是………………………………( )
A.线速度越大,周期一定越小B.角速度越大,周期一定越小
C.转速越小,周期一定越小D.圆周半径越大,周期一定越小
8.甲、乙两物体都做匀速圆周运动,其质量之比为1:
2,转动半径之比为1:
2,在相等的时间内甲转过60°角,乙转过45°角,则甲、乙两物体所受合外力之比为().
A.1:
4B.4:
3C.4:
9D.9:
16
9、如图所示,汽车以速度V通过一半圆形拱桥的顶点时,关于汽车受力的说法正确的是
A.汽车受重力、支持力、向心力
B.汽车受重力、支持力、牵引力、摩擦力、向心力
C.汽车的向心力是重力
D.汽车的重力和支持力的合力是向心力
10.如右图所示,为A、B两质点做匀速圆周运动的向心加速度随半径变化的图象,其中A为双曲线的一个分支。
由图可知
(A)A物体运动的线速度大小不变
(B)A物体运动的角速度大小不变
(C)B物体运动的角速度大小不变
(D)B物体运动的线速度大小不变
11.如图所示,A、B两球质量相等,且由轻质细杆连着,绕O点在光滑的水平面上以相同的角速度做匀速圆周运动,OB=BA,则().
A.两段杆的拉力之比:
TAB:
TOB=2:
1
B.两段杆的拉力之比:
TAB:
TOB=3:
2
C.两段杆的拉力之比:
TAB:
TOB=1:
2
D.两段杆的拉力之比:
TAB:
TOB=2:
3
12、质量为m的物块,沿着半径为R的半球形金属壳内壁滑下,半球形金属壳竖直放置,开口向上,滑到最低点时速度大小为V,若物体与球壳之间的摩擦因数为μ,则物体在最低点时,下列说法正确的是……………………………………………………………( )
A.受到向心力为mg+mV2/RB.受到的摩擦力为μmV2/R
C.受到的摩擦力为μmgD受到的合力方向指向圆心.
二、填空题(每题4分,共20分)
13.地球半径为r=6.4×108km位于地球赤道上的物体,随着地球自转,做匀速圆周运动,它运动的角速度约是,线速度约是;北纬30°处的物体的角速度约是,线速度约是。
14.如图所示是一皮带传动装置,O1为两轮的共同轴,由O2带动。
已知RB∶RA=3∶2,RA∶RC=1∶2,假若皮带不打滑,则分别在三个轮边缘的B、A、C三点角速度之比是;线速度之比是;向心加速度之比是。
15.一弹簧振子在O点附近做机械振动,它离开O点向M点运动,4s末第一次达到M点,又经过2s第二次到达M点,再次经过s它将第三次到达M点.
16.甲、乙两个质点都作匀速圆周运动,甲的质量是乙的2倍,甲的速率是乙的4倍,甲的圆周半径是乙的2倍,则甲的向心力是乙的______倍.
17.如图所示,光滑圆盘中心有一小孔,用细绳穿过小孔,两端各系一质量相等的小球A、B,盘上的球A做半径r=20cm的匀速圆周运动,要保持B球平衡,A球的角速度是_________rad/s.(g取10m/s2)
三、计算题(共44分)
18、如图所示,半径为r的圆桶绕中心轴OO‘匀速转动,角速度为ω,一小块质量为m的小滑块,靠在圆桶内壁与圆桶保持相对静止,求小滑块对桶的摩擦力和压力大小各为多少?
19.水平面上固定着一个直径为4m的光滑的圆周轨道,一个质量是3kg的小球在轨道的约束下做匀速圆周运动,已测出其运动周期为3.14S,那么小球所受的合力大小为多少?
20、如图所示,质点P以O为圆心在水平面内做匀速圆周运动,半径为r,角速度为,当质点P正通过x轴时,另一质量为m的质点由静止开始在水平恒力F的作用下,沿x轴正方向运动,若要使P、Q两质点能在某时刻的速度相同(大小和方向),则力F的可能取值为?
21、如图所示,支架质量为M,置于粗糙水平地面上,转轴O处悬挂一个质量为m的小球,拴球的细线长为L,当小球在竖直平面内做圆周运动时,支架始终保持静止状态,若小球到最高点时,恰好支架对地面无压力,求小球到达最高点时的速度的大小。
2019-2020年高一下学期第一次质量抽查英语试题含答案
I.Listeningprehension.(20%)
SectionAShortConversations(10%)
Directions:
InSectionA,youwillheartenshortconversationsbetweentwospeakers.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Theconversationandthequestionwillbespokenonlyonce.Afteryouhearaconversationandthequestionaboutit,readthefourpossibleanswersonyourpaper,anddecidewhichoneisthebestanswertothequestionyouhaveheard.
1.A.Kate’sbabyintheyoungest.B.Theman’sbabyintheyoungest.
C.Thewoman’sbabyistheyoungest.D.Theman’ssister’sbabyistheyoungest
2.A.HewillgoontohighereducationB.Hewillworkforhisfather.
C.Hewillmakesomeotherchoice.D.Hehastopassanothertest.
3.A.Hemusthandinareportonthemuseum.
B.Heistoobusytogoalong.
C.Hehastowashhishandsfirst.
D.Hehasreadafullaccountofthemuseum.
4.A.No,alltheroomsaretakenB.Yes,therearesomesparerooms.
C.Yes,thereisadoubleroom.D.Yes,thereisasingleroom.
5.A.60B.57C.65D.53
6.A.GreenB.LightblueC.YellowD.Brown
7.A.At5:
00B.At4:
20C.At3:
00D.At2:
00
8.A.ItisgoingtorainB.Ithasjuststartedraining
C.IthasbeenrainingforsometimeD.Therainhasstopped.
9.A.Anewtendency.B.Adiseasethatisspreading
C.Somethingthatspreadsovertheentirebody.D.Arecentfireinthearea.
10.A.Shevisitshotels.B.Shetoursmuseums
C.ShewalksthroughtownD.Shedoesn’teattillevening.
SectionBPassages(6%)
Directions:
InSectionB,youwillheartwoshortpassages,andyouwillbeaskedthreequestionsoneachofthepassages.Thepassageswillbereadtwice,butthequestionswillbespokenonlyonce.Whenyouhearaquestion,readthefourpossibleanswersonyourpaperanddecidewhichonewouldbethebestanswertothequestionyouhaveheard.
Questions11through13arebasedonthefollowingpassage.
11.A.ShehadtheheadofacatB.Shewasananimal.
C.ShewasprettyD.Shehadwings.
12.A.Theyloveddoingsomethingfortheperson.
B.Theybelievedthepersoncouldliveanotherlife.
C.Theythoughtthepersonwouldsleeppeacefully.
D.Theywishedthepersontoebackhome.
13.A.FoodanddrinkB.Amaskmadeofjewelry.
C.HugestructuresD.Thingsneededinlife.
Questions14through16arebasedonthefollowingpassage.
14.A.HewantedtotakeashortcutB.Itwasgettingdark.
C.TherewerenolightsaroundD.Hedidn’tliketheowner.
15.A.BeingblamedB.BeingattackedC.BeingcaughtD.Closingthegate.
16.A.ThelandownerB.HisownshadowC.AstrangesoundD.Hisownfear.
SectionCLongerConversations(4%)
Directions:
InSectionC,youwillheartwolongerconversations.Theconversationswillbereadtwice.Afteryouheareachconversation,youarerequiredtofillinthenumberedblankswiththeinformationyouhaveheard.
Blanks17through20arebasedonthefollowingconversation.
TravellingbyAir
Thewomansaidshe’denjoytheman’s_______17________.
Itwasthewoman’sfirstairtrip_________18___________.
Thetake-offwas____________19____________.
Becauseoftheair________20__________,theman’searshurt.
pletetheform.WriteONEWORDforeachanswer.
II.GrammarandVocabulary(33%)
SectionA18%
Directions:
BeneatheachofthefollowingsentencestherearefourchoicesmarkedA,B,CorD.Choosetheoneanswerthatbestpletesthesentence.
21.Thenumberofdeathsfromcancerwillbereducedgreatlyifpeople_____toeatmorefruit
andvegetables.
A.persuadeB.willpersuadeC.bepersuadedD.arepersuaded
22.StephenHawkingbelievesthattheearthisunlikelytobetheonlyplanet______lifehasdevelopedgradually.
A.thatB.whereC.whichD.whose
23.Uptonow,theHopeProject______thousandsofchildrenwhowouldotherwisehavedied.
A.wouldsaveB.savesC.hadsavedD.hassaved
24.______inawell-knownuniversityiswhateverybodywishesfor.
A.EducatedB.BeingeducatedC.ToeducateD.Educating
25.Hemadeamistake,butthenhecorrectedthesituation________itgotworse.
A.untilB.whenC.beforeD.as
26.Ifyouaretravelling_________thecustomsarereallyforeigntoyourown,pleasedoastheRomansdo.
A.inwhichB.whatC.whenD.where
27.Hisfunnyjokeinthespeech______allofuspresentandwecouldn’thelplaughingyesterday.
A.wasamusingB.wasamusedC.amusedD.amusing
28.—Doyouhaveanyproblemswhenyou______thisjob?
—Well,I’mconsideringthesalaryandworkingconditions.
A.offeredB.willbeofferedC.areofferedD.offer
29.Weshouldpaygreatattentiontosafetyinschoolsbecauseoffrequentreportsaboutaccidents
_______studentsgotinjuredorkilledwhileinschool.
A.inwhichB.forwhichC.whichD.that
30.IwasmuchimpressedbygreatchangesandfastpaceoflifeinShanghai______Icameto
visitthisfantasticcity.
A.atthefirsttimeB.forthefirsttimeC.bythefirsttimeD.thefirsttime
31.Onceharm______totheenvironment,ittakesyearstohavethesystemrecovered.
A.doesB.isdoneC.willbedoneD.bedone
32.Worldwidemarketsgettighterandthepainonlylastslonger______internationalcooperationisstrengthenedinnotime.
A.becauseB.ifC.unlessD.when
33.Theentrypointtissueintheveryfrontofeyefunctionsasthewindow______alllighthastopassonitsway.
A.whichB.thatC.acrosswhichD.throughwhich
34.Takingphysicalexerciseregularlyisaneffectivewaytoavoid______withtheflu.
A.toinfectB.infectingC.tobeinfectedD.beinginfected
35.______strong-mindedtheteachersare,theyshouldgivetheirstudentsenoughtimetosharetheirideasinclass.
A.HoweverB.WhateverC.NomatterD.Although
36.Thegovernmentmustfindan_______policytodealwiththisproblem.
A.effectiveB.effectC.efficientD.effort
37.Asweapproachedtheborder,thepicturesquenatural________becamelushandspectacular.
A.viewB.sightC.sceneD.scenery
38.Thesuspensionbridge_______acrossthewholevalley.
A.expandsB.extendsC.spreadsD.stretches
SectionB6%
Direction:
pletethefollowingsentencesbyusingthephrasesfromtheboxintheirproperforms.Notethatthereisonephrasemorethanyouneed.
beavailableto
dependon
towerover
withinarm’sreach
pointout
havesomethingtodowith
beobligedto
insiston
39.Ishould__________sellingthecarwillcoverjustthehospitalexpenditures
40.Thegovernmentmight___________putitsmoneywhereitsmouthistoproveitsmitment
41.Cheapgoods___________us,butnotinsufficientquantitiestosatisfydemand.
42.Whethersuchpropertiesareagooddeal____________individualsituations
43.Doesthis____________BauergoingbackintheretoquestionMarkov?
44.Mozart_________allothermusicians.
SectionC9%
Direction:
pletethepassagebychoosingtheproperwordsinthebox.
A.guidance
B.thoroughly
C.sense
D.master
AB.procedures.
AC.crossroads
AD.gratitude
BC.remote
BD.affect
CD.contacts
Therea
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