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docx.docx

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docx.docx

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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docx

高中物理学习材料

唐玲收集整理

1、Figure1showsaviewofasimpletent.Ithasbeenpitchedusingacentrepoleontheinsideandthreeropesontheoutside.Theropesareshownasdashedlines.Theropesareallofequallengthandallmakeanangleof45°withtheverticalcentrepole.Theforcethatthegroundexertsoneachoftheropesisequalto100N.Thepoleandropescanbeconsideredtohavenomass.

a.Isthepoleintensionorincompression?

b.What’sthemagnitudeoftheforceinthecentrepole?

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?

A.AlloyA

B.AlloyB

C.AlloyC

D.AlloyD

6、Whichalloywouldbedescribedasthetoughest?

A.AlloyA

B.AlloyB

C.AlloyC

D.AlloyD

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,flowingthroughtheconductorproducesamagneticfieldofmagnitude50µTatadistanceR.

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

24、Thefollowingdiagramshowsthepathstakenbythreedifferentparticles,X,YandZ,astheypassthroughauniformmagneticfield.

Whichofthefollowingcouldbecorrect?

AXisaproton,Yisanelectron,Zisaneutron.

BXisanelectron,Yisaneutron,Zisaproton.

CXisaproton,Yisaneutron,Zisanelectron.

Thefollowinginformationappliestoquestions25–26.

Thediagramshowsasimplifiedversionofadirectcurrentmotor.

25、Forthepositionofthecoilshown,calculatethemagnitudeoftheforceonsegmentWYwhenacurrentof1.0aflowsthroughthecoil.

26、Inwhichdirectionwillthecoilbegintorotate?