首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
一列简谐横波某时刻的波形如图所示.P为介质中的一个质点,波沿x轴的正方向传播.下列说法正确的是( )
查看本题答案
包含此试题的试卷
高三下学期物理《》真题及答案
点击查看
你可能感兴趣的试题
一列简谐横波某时刻的波形如图甲所示从该时刻开始计时波上
质点的振动图象如图乙所示,则下列说法正确的是( ) A.这列波沿x轴正向传播
这列波的波速是25 m/s
从该时刻起经0.4 s,A.质点通过的路程是16 Cm
从该时刻起,质点P.将比质点Q.先回到平衡位置
一列简谐横波沿x轴正方向传播t=0时刻的波形如图所示经0.6s质点a第一次到达波峰位置则这列波的传播
一列简谐横波某时刻波形如图所示此时质点P.的速度方向沿y轴负方向则
这列波沿x轴正方向传播
质点b此时动能正在增大,加速度也在增大.
再经过一个周期时,质点a运动到y=2cm处
当质点P.运动到最低点时,质点b恰好运动到平衡位置
一列简谐横波某时刻波形如图所示此时质点P.的速度方向沿y轴正方向则
这列波沿x轴负方向传播
质点a此时动能最大,加速度最小
再经过一个周期,质点P.运动到x=6m处
当质点P.运动到最低点时,质点b恰好运动到平衡位置
一列沿x轴传播的简谐横波某时刻的波形图象如图中的实线所示再经t=0.2s的波形图如图11中的虚线所示
沿x轴正向传播的一列简谐横波在t=0时刻的波形如图所示P.为介质中的一个质点该波的传播速度为2.5m
质点P.对平衡位置的位移为正值
质点P.的速度方向与对平衡位置的位移方向相同
质点P.的速度方向与加速度的方向相同
质点P.的加速度方向与对平衡位置的位移方向相反
一列沿x轴正方向传播的简谐机械横波波速为4m/s某时刻波形如图所示下列说法正确的是
这列波的振幅为4 cm
这列波的周期为1 s
此时x=4 m处质点沿y轴负方向运动
此时x=4 m处质点的加速度为0
一列简谐横波某时刻的波形图象如图所示从该时刻开始计时波上
质点的振动图象如图乙所示,则
A.若此波遇到另一列简谐横波并发生稳定干涉现象,则所遇到的频率为2.5Hz
若该波能发生明显的衍射现象,则该波所遇到的障碍物尺寸一定比20m大很多
从该时刻起,再经过△t=0.4s,P.质点通过的路程为4m
从该时刻起,质点P.将比质点Q.先回到平衡位置
一列简谐横波在某时刻的波形如图a所示其中的某质点的振动图象如图b所示试求①波速为多少②图a中的质点e
一列简谐横波沿x轴负方向传播abcd为介质中沿波传播方向上四个质点的平衡位置某时刻的波形如图甲所示此
a处质点的振动图像
b处质点的振动图像
c处质点的振动图像
d处质点的振动图像
一列沿x轴正方向传播的简谐横波某时刻的波形如图所示.P.为介质中的一个质点从该时刻开始的一段极短时间
v变小,a变大
v变小,a变小
v变大,a变大
v变大,a变小
一列简谐横波在t=0时刻的波形如图所示此时刻介质质点P的速度为vP点下一次的速度仍为v的时刻为t=0
一列简谐横波某时刻波形如图所示此时质点P.的速度方向沿y轴正方向则
这列波沿x轴负方向传播
质点a此时动能最大,加速度最小
再经过一个周期,质点P.运动到x=6m处
当质点P.运动到最低点时,质点b恰好运动到平衡位置
一列简谐横波某时刻波形如图所示下列说法正确的是
x=a处质点振动的能量大于x=b处质点的振动能量
x=b处质点的振动的频率由波源决定
小林用笔沿波形描一遍,描图过程中笔尖的运动为简谐振动
x=c处质点比x=a处质点少振动一个周期的时间
一列沿x轴正方向传播的简谐横波某时刻的波形如图16所示.P.为介质中的一个质点从该时刻开始的一段极短
v变小,a变大
v变小,a变小
v变大,a变大
v变大,a变小
简谐横波某时刻的波形如图所示P为介质中的一个质点下列说法中正确的是
一列简谐横波沿x轴正方向传播频率为5Hz某时刻的波形如图所示介质中质点A在距原点8cm处质点B在距原
0.08s
0.12s
0.14s
0.16s
一列简谐横波沿x轴负方向传播abcd为介质中沿波传播方向上四个质点的平衡位置某时刻的波形如图甲所示此
a处质点的振动图像
b处质点的振动图像
c处质点的振动图像
d处质点的振动图像
一列简谐横波t=0时刻的波形如图中实线所示t=0.2s小于一个周期时刻的波形如图中的虚线所示则
质点P.的运动方向可能向右
波的周期可能为0.2 s
波的传播速度可能为90 m/s
0~0.2 s内质点P.通过的路程为一个振幅
一列简谐横波某时刻的波形如图甲所示从该时刻开始计时波上A.质点的振动图象如图乙所示①该列波沿x轴传播
热门试题
更多
1分IfirstmetLisathreeyearsagowhenweataradiostationtogether. A.haveworked B.hadbeenworking C.wereworking D.hadworked
1分Thetaxidriverdenied_thewomanatfirstwhenaskedbythepoliceman. A.kill B.killing C.tokill D.tokilling
1分TomisfacingadifficultbetweenstayingwithhisfamilyandworkinginTibet.choose
1分Thejokewassofunnythatitmadehimagainandagain. A.laugh B.tolaugh C.laughed D.laughs
4分 IhavebeeninChinafornearlyayear.Asaforeignerit'shardformetellwhatChinesepeopleare1.ButmyexperienceinBeijingsaidsomething. AcoupleofweeksagoIwenttobuyfourbigsuitcases行李箱fortravel.Itsuddenlyrainedheavily2Iwasgoingdownthestreet.Astrangercalledmeintohislittleshop.Heofferedmeacupofteaandachair.Whentheraingot3Ithankedhimandrushedtoastorenearbytobuymysuitcases. Ifyou'veevertriedtopushfourbigsuitcasesbyyourselfyoumayunderstandmysituation.Ilookedsillyforthesuitcasesweredancingwildlyacrossthefloor.ThenIgotatouchontheshoulder.Itwastheseller.HesignedthatIshouldwait.Afewminuteslaterhedroveupinacarandputthesuitcases4.Thenwewentdrivinghappilyalongtheroadtomyhome.Iofferedhimsomemoneybutherefused.InbrokenEnglishhesaidFeelgood…helpyou. NowyoucanseeChinesepeoplearealwaysreadytohelpyou. 1. 2. 3. 4.
2分Doesyourbreakfast﹣roomgetawonderfulviewofthelakefromfourwindows?改为肯定句 breakfast﹣roomawonderfulviewofthelakefromfourwindows.
1分﹣HelloSally!CanIseeMr.Brown? ﹣.I'lltellhimyouarehere. A.Whatapity B.Justaminute C.Congratulations D.Nevermind
1分Whichofthefollowingunderlinedpartsisdifferentinpronunciation? A.Operate B.Contact C.Discover D.responsibility
1分Thethiefonthescenewhenhewastryingtoescapefromtheshop. A.caught B.wascaught C.hadcaught D.hadbeencaught
1分I'mafraidthatweneedsixcupsfortomorrow'sdinnerparty. A.another B.other C.others D.theother
1分Mygrandmaisinterestedintakingwithhermobilephone.photo
1分HappyNewYearChristina.Here'sagiftyou. A.in B.from C.for D.with
1分AlibabaCEOJackMahasdecidedtoretirefromhiscompanyinhis. A.fifty B.fifties C.fiftieth D.fiftieths
1分Whichofthefollowingunderlinedpartsisdifferentinpronunciationfromtheothers? A.Let'srelaxourselvesforawhile. B.Canyoutellmeyouraddress? C.Gotothewebsitetogetpictures. D.Shallwehavesevenapples?
1分Theactresslookedatinthemirrorandputonthemake﹣up. A.she B.her C.hers D.herself
1分Aftertwohours'discussionthey最终reachedanagreement.
12分IwillneverforgettheSundayafternoonsIspentatmygrandfather'sfarminWesternPennsylvaniawhenIwasalittleboy.Milesofwindingstonewallsaroundthehouseprovidedendlesshoursof1foracitykidlikeme. IcanstillrememberoneafternoonwhenIwaseightyearsold.Sincemyfirstvisittothe2I'dwantedtobeallowedtoclimbthestonewallsaroundthefarm.Myparentswouldneverthinkitwasgood.Stillmywishtoclimbacrossthosewallsgrewso3.OnespringafternoonIpickedupallmycourageandenteredthelivingroomwheretheadultsweresittingandtalkingoverteaafterdinner. CanIclimbthestonewalls?Iasked.Immediatelythewomenintheroomcried.Heavensno!You'll4yourself!Iwasn'ttoodisappointedtheirreplywasjustasI'dexpected.ButbeforeIcouldleavetheroommygrandfatherstoppedme.Waitaminute.IheardhimsayLettheboyclimbthestonewalls.Hehasto5todothingsforhimself. Hurryuphesaidtomeandcomeandseemewhenyougetback.ForthenexttwoandahalfhoursIclimbedthoseoldwallsandhadthetimeofmylife.LaterImetwithmygrandfathertotellhimaboutmyadventure冒险.I'llneverforgetwhathesaid.Fredhesaidsmilingyoumadethisdaya6dayjustbybeingyourself.Alwaysrememberthere'sonlyonepersoninthiswholeworldlikeyouandIlikeyouexactlyasyouare. 1.A.sadness B.pity C.fun D.puzzle 2.A.farm B.house C.home D.room 3.A.weak B.high C.low D.strong 4.A.enjoy B.hurt C.forget D.lose 5.A.agree B.finish C.promise D.learn 6.A.terrible B.difficult C.special D.hopeless
1分In2022BeijingwillhosttheWinterOlympics.mybrotherandIwanttowatchit. A.Neither B.All C.Either D.Both
1分﹣Whatwouldyouliketohaveforsupper? ﹣EithernoodlesorriceOK.Idon'tmind. A.are B.is C.were D.was
1分luckythewinnerofthegameshowis!Aeleven﹣daytripabroadforfree! A.How B.What C.Whata D.Whatan
12分WhenIwasinhighschoolIworkedpart﹣timehelpingDadsellfruitsandvegetablesatamarket.OnedayasIwaspreparingthefruitsalittleboycamebywithhismomandsister.Hewasabouteightyearsoldandthegirlsixorseven.Theywerelookingatthefruitsinfrontofme.IheardthekidssaytotheirmominFrench.They'regood!IknewitwasFrenchbecauseIcanspeakandunderstandit. ThenInoticedhowthemomwaspickingthefruits.AtfirstIthoughtshewasreallylookingatthefruitsbecauseshewasfacingthem.ButthenInoticedhowmuchshehadtofeelandsmelleachoneasshepickedthemout.Andsheoftenaskedhersonifitlookedokaybutlookedwayabovewherehisfacewas.PuttingwhatIsawtogetherIwassureshewasblind. Bothofthekidscontinuedtohelptheirmompickoutthefruits.Thesonmadesurethefruitswerenotobviouslybadandthedaughterhandedthemtohermom.Thewomanthenfelteachoneandsmiledandthedaughterwouldputthemintotheirbasket.Thekidsweresmilingwhilehelpingtheirmompickthefruitsout. Theirsmileandgentlemannermovedmeinawaythatneverhappenedbefore.Itwassobeautifultoseesuchyoungkidssowillinglyhelp.Mostkidsthatagewouldbepickingoutcandiesortoysinastoreforthemselvesinsteadofhelpingtheirmompickoutfruitsasthetwokidsdid. ItwasgreattoseethemomentwithmyowneyesbutnotsogreatbecauseIdidn'ttellthemomhowbeautifulherchildrenwereintheirlanguage.ThisiswhatIfeelsorrytothisday. 1.Wheredidthewriterhelphisdadsellfruitsandvegetables? 2.Whatdidthewomanandherkidscometothemarkettobuy? 3.Howwasthewomanpickingthefruits? 4.Whydidthewomanhavetofeelandsmelleachoneasshepickedthemout? 5.Werethekidsgladtohelptheirmompickthefruitsout? 6.Whatdoyouthinkthebeautifulmomentis?Givethedetail.
1分Mikedon'tbeafraidtomakemistakesyou'llnevermakeprogress. A.so B.or C.and D.but
1分Themanager'svoicesoundedonthephone.Heofferedtoshowusaroundthecompany. A.softly B.friendly C.gently D.seriously
1分Lisalearnsroadbywalkingtoandfromschoolalongwithherparents.safe
1分WhenyouarelearningEnglishuseityouwillloseit. A.but B.or C.then D.and
1分ThesongsungbythefamoussingersoundssoandIloveitverymuch. A.well B.sadly C.sweet D.bad
2分Myfatherwenttoexerciseinthefitnesscentretwiceaweeklastyear.对划线部分提问 didyourfathergotoexerciseinthefitnesscentrelastyear?
2分Peoplewilldesignrobotstodomosthouseworkforhumaninthenearfuture.改为被动语态 Robotswilltodomosthouseworkforhumaninthenearfuture.
2分wanttowithfriendsintheirfreetimepeoplehavefun连词成句
1分MygrandmaallmyphotographsandtoyssinceIwasbornin2004. A.kept B.haskept C.hadkept D.willkeep
热门题库
更多
高三上学期物理
高三上学期生物
高三上学期化学
高二下学期化学
高二下学期生物
高三下学期生物
高三下学期化学
高三上学期英语
高二下学期英语
教案备课库
高三下学期英语
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库