人教版高中物理选修11高二上学期期末考试物理中澳班试题无答案Word格式文档下载.docx
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UsethefollowinginformationtoanswerQuestions2–7.
Cylindricalsamplesoffourdifferentmetalalloys–AlloyA,AlloyB,AlloyCandAlloyD–areplacedinastresstesterandextendedundertensiontotesttheirproperties.AsketchoftheapparatusisshowninFigure2.
Theinitiallengthofeachsampleinthestresstesterwas20cm(0.20m)andeachsamplehadacross-sectionalareaof2.0×
10–3m2.
TheresultsofthestresstestsareshowninFigure3.
2、What’sthevalueofYoung’smodulusofthestiffestalloy?
3、WhenAlloyBisstressedto250MPa,what’sthemagnitudeoftheforceappliedtothesample?
4、Whichalloyshowselasticbehaviouroverthegreatestrangeofstrainvalues?
A.AlloyA
B.AlloyB
C.AlloyC
D.AlloyD
5、Whichalloyshowsplasticbehaviouroverthegreatestrangeofstressvalues?
6、Whichalloywouldbedescribedasthetoughest?
7、Theinitiallengthofeachsampleinthestresstesterwas20cm(0.20m)andeachsamplehadacross-sectionalareaof2.0×
10–3m.What’sthevalueofthetotalenergyrequiredtostrainAlloyCtoastrainof0.024?
UsethefollowinginformationtoanswerQuestions8and9
Thecantileverroofhasamassof12000kgandisattachedbyasecuringbolttoananchorstructurethatisembeddedfirmlyintheground.
Thecantileverroofhasuniformthicknessanddensity,andisalsosupported(asshown)40mfromitsfreeend.
Figure4showsthesituationfromtheside.
8、What’sthemagnitudeoftheforcethatthesupportexertsonthecantileverroof?
9、What’sthemagnitudeoftheforcewithwhichtheanchorstructureispullingdownwardonthecantileverroof?
10、Igloosaretemporarystructuresthatcanbemadefromblocksofcompactedsnow.
Theseblocksofsnowareveryweakintension,yetitispossibletobuildastrongandstableigloousingthem,providedtheigloosareshapedasarches(ordomes,whichcanbeconsideredasacollectionofarches).Figure5showsacross-sectionofastrongandstableigloo.
Whichofthefollowingstatementsbestdescribeswhyitispossibletobuildastrongandstablestructurefrommaterialthatissoweakintension?
A.Althoughsnowisveryweakintension,itsYoung’smodulusundertensionishighenoughtosupportthestructure.
B.Thearchshapeandtheforceofgravityensurethattheblocksofsnowarealwaysincompression,andsnowisstrongincompression.
C.Strongandstableiglooscanonlybebuiltwhenreinforcingmaterialisincludedinthesnowblocks,formingastrongcompositematerial.
D.Althoughsnowblocksareweakintensiontheyarestrongundershearstresses,thussuitableforthetask.
11、Thefollowingdiagramsshowcombinationsofforces(asarrows)actinginvariousplacesonasolidcube.
Whichdiagrambestillustratescombinationsofforcesthatprovideashearstress?
12、A300kgsteelbeamissupportedsothatitisincompressiononthetopsurfaceandintensiononthebottomsurfaceasshowninFigure6.
Whichofthefollowingmethodsofsupportwillachievethis?
A.Thebeamisclampedfirmlyatitsleft-handend.Thereisanadditionalforceof3000Nactingasshown.
B.Thebeamisclampedatitsleft-handend.
C.Thebeamrestsfreelyontwosupports.
D.Thebeamrestsfreelyononecentralsupport.
UsethefollowinginformationtoanswerQuestions13and14.
TwoidenticalbarmagnetsofthesamestrengtharearrangedatrightanglesandareequidistantfrompointP,asshowninFigurebelow.
13、AtpointPonthediagram,drawanarrowindicatingthedirectionofthecombinedmagneticfieldofbarmagnets.IgnoreEarth’smagneticfield.
14、Thebarmagnetsarereplacedbytwoweakermagnets.Thetwonewmagnetsareidenticaltoeachother.TheyarearrangedatrightanglesandareequidistantfrompointP.
ThemagnitudeofthemagneticfieldofasinglebarmagnetatpointPisthesameasthemagnitudeofthemagneticfieldofEarthatpointP.ThedirectionofEarth’smagneticfieldisshowninfigurebelow.
AtpointPonthediagram,drawanarrowindicatingthedirectionofthecombinedmagneticfieldofbarmagnetsandEarth.
15、Drawthreemagneticfieldlines,witharrowstoshowdirection,toindicatethemagneticfieldproducedbothinsideandoutsidethesolenoid.
Thefollowinginformationappliestoquestions16–18.
Thediagrambelowshowsaconductormwithitsaxisperpendiculartotheplaneofthepage.thelocalmagneticfieldstrengthoftheearthis5.0×
10–5T.Acurrent,I,flowingthroughtheconductorproducesamagneticfieldofmagnitude50µ
TatadistanceR.
16、Inwhichdirection(intooroutofthepage)wouldthecurrentneedtobeflowingthroughthisconductorforittoproducethefollowingfielddirectionsatthepointsspecified?
aeastatA
bsouthatD
17、WhatisthemagnitudeanddirectionofthemagneticfieldproducedbythisconductoratpointB,iftheresultantfieldatthispointiszero?
Whatisthedirectionoftheelectriccurrentresponsibleforproducingthisfield?
18、WhatisthemagnitudeanddirectionoftheresultantmagneticfieldatpointBforacurrent,I,flowingthroughthisconductoroutofthepage?
19、Thefollowingdiagramshowsacross-sectionalviewoftwolongparallelconductors,mandn,eachcarryingcurrentsofequalmagnitudeIintothepage.
aAtwhichofthepointsQ,RandS,couldtheresultantmagneticfieldduetothecurrentsandtheEarthbezero?
bwhatisthedirectionofthemagneticforceonconductornduetothefieldproducedbyconductorm?
20、Thediagrambelowdepictscross-sectionalviewsofthreelong,straight,current-carryingconductors,eachlocatedbetweenthepolesofapermanentmagnet.Themagneticfield,B,ofthesemagnets,andthecurrents,I,aremutuallyperpendicularinallcases.Fordiagrambelow,calculatethemagnitudeanddirectionofthemagneticforceona5.0cmsectionofconductorwithI=2.0Aintothepage,andB=2.0×
10–3T.
ThefollowinginformationrelatestoQuestions21–5.
Arectangularloopofwire,PQRS,ofsidesPQ=4.0cmandQR=8.0cm,isplacedinsidethesolenoidasshowninFigurebelow.Theloophas3turnsofwire.Acurrentof4.0ampsflowsintheloop,inthedirectionindicatedbythearrow.Theuniformmagneticfieldstrengthinsidethesolenoidis5.0×
10–2T.
21、DrawanarrowonFiguretoindicatethedirectionoftheforceonthesidePQ.WhatisthemagnitudeoftheforceonthesidePQ?
Showyourworking.
22、Whatistheforce(magnitudeanddirection)onthesideQR?
23、thefollowingdiagrams(a)and(b)showtwodifferentelectronbeamsbeingbentastheypassthroughtwodifferentregionsofuniformmagneticfieldofequalmagnitudesBxandBy.Theinitialvelocitiesoftheelectronsintherespectivebeamsarev1andv2.
Whichofthefollowingiscorrect?
Av1=v2,Bxintothepage
Bv1=v2,Byintothepage
Cv2>
v1,Byintothepage
Dv2<
v1,Byoutofthepage
24、Thefollowingdiagramshowsthepathstakenbythreedifferentparticles,X,YandZ,astheypassthroughauniformmagneticfield.
Whichofthefollowingcouldbecorrect?
AXisaproton,Yisanelectron,Zisaneutron.
BXisanelectron,Yisaneutron,Zisaproton.
CXisaproton,Yisaneutron,Zisanelectron.
Thefollowinginformationappliestoquestions25–26.
Thediagramshowsasimplifiedversionofadirectcurrentmotor.
25、Forthepositionofthecoilshown,calculatethemagnitudeoftheforceonsegmentWYwhenacurrentof1.0aflowsthroughthecoil.
26、Inwhichdirectionwillthecoilbegintorotate?