首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
小莉要自制两个弹簧测力计,她选择了甲、乙两根不同规格的弹簧进行测试,绘出如图所示的图象.则下列说法正确的是( )
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
弹簧测力计下挂一个物体示数为G.把物体没入甲液体中弹簧测力计示数为G./3把物体没入乙液体中弹簧测力
将橡皮筋的一端固定在A点另一端拴上两根细绳每根细绳分别连接一个量程为5N最小刻度为0.1N的弹簧测力
为了探究弹力F.和弹簧伸长量x的关系某同学选了甲乙两根规格不同的弹簧进行测试根据测得的数据绘出如图所
将橡皮筋的一端固定在A.点另一端拴上两根细绳每根细绳分别连着一个量程为5N最小刻度为0.1N.的弹簧
甲乙两人各用20N的水平力分别向两个相反方向拉弹簧测力计弹簧测力计静止不动则弹簧测力计的示数是
20N
10N
0N
40N
为了探索弹力和弹簧伸长的关系某同学选了甲乙两根规格不同的弹簧进行测试根据测得的数据绘出如图所示图像.
如图甲所示在竖直平面内将小圆环挂在橡皮条的下端橡皮条长度为GE用两根弹簧测力计拉动小圆环到O.点小圆
甲乙两物体的体积相同甲的密度是4×103kg/m3乙的密度是8×103kg/m3将它们分别挂在
B.两个弹簧测力计下,则以下判断正确的是:A.A.
两弹簧测力计的示数之比F.甲:F.乙=1:1;B.若将它们都浸没在水中,甲、乙两物体受到的浮力之比F.浮甲:F.浮乙=1:2;
若将它们都浸没在水中,A.弹簧测力计的示数与甲受到的重力之比F.′甲:G.甲=3:4;
若将它们都浸没在水中,A.B.两弹簧测力计的示数之比F.′甲:F.′乙=7:3.
将橡皮筋的一端固定在A.点另一端拴上两根细绳每根细绳分别连着一个量程为5N.最小刻度为0.1N.的弹
学校科技活动小组的同学们准备自己动手制作弹簧测力计他们选了甲乙两根规格不同的弹簧进行测试绘出如图所示
将橡皮筋的一端固定在A.点另一端拴上两根细绳每根细绳分别连着一个量程为5N.最小刻度为0.1N.的弹
在探究求合力的方法实验中某同学首先将白纸固定在方木板上将橡皮筋的一端固定在A.点另一端拴上两根细绳每
将橡皮筋的一端固定在A点另一端拴上两根细绳每根细绳分别连着一个量程为5牛最小刻度为0.1牛的弹簧测力
将甲乙两个不同材料的实心物体分别挂在已校零的弹簧测力计上当把它们分别浸没到水中时发现弹簧测力计的示数
甲.乙两个物体一定处在水中相同深度
甲.乙两个物体的体积相等
甲.乙两个物体浸没在水中时,弹簧测力计示数是相同的
甲.乙两个物体在空气中时,弹簧测力计示数是相同的
小明同学在学完力的合成与分解后想在家里做实验验证力的平行四边形定则他从学校的实验室里借来两个弹簧测力
甲乙两人各用50N的水平力分别向两个相反方向拉弹簧测力计弹簧测力计静止不动则弹簧测力计的示数是
100N
50N
25N
0
为了探究弹力和弹簧伸长的关系某同学选了甲乙两根规格不同的弹簧进行测试根据测得的数据绘出如图所示图像1
学校科技活动小组的同学们准备自己动手制作弹簧测力计他们选取了甲乙两种规格的弹簧进行测试绘出如图所示图
在探究求合力的方法实验中某同学首先将白纸固定在方木板上将橡皮筋的一端固定在A.点另一端拴上两根细绳每
将劲度系数为200N/m的橡皮筋的一端固定在A.点另一端拴两根细绳每根细绳分别连着一个量程为5N最小
热门试题
更多
HesaidDon'tmakesomuchnoiseboys →Hetoldtheboysmakesomuchnoise.
I'dlikeahousewindowfacesthesea.
Ihappenedtobeupstairsdoingmyhomeworkwhilethetelephonerang.
IncreasinglyAmericansarebecomingtheirowndoctorsbygoingonlinetodiagnose诊断theirsymptoms病症orderhomehealthtestsormedicaldevicesorevenself﹣treattheirillnesseswithdrugsfromInternetpharmacies药店.Some1doctorsbecauseofthehighcostofmedicalcareespeciallyiftheylackhealthinsurance.Ortheymaystaybecausetheyfinditembarrassing难为情to2theirweightalcoholconsumption酗酒orcouchpotatohabits.Patientsmayalso3whattheymightlearnabouttheirhealthortheydistrustphysiciansbecauseofnegative不愉快的experiencesinthepast.Butplayingdoctorcanalsobea4game. EverydaymorethansixmillionAmericansturntotheInternetfor5answers﹣mostofthemaren'tnearlyskeptical怀疑的enoughofwhattheyfind.AsurveybythePewInternet&AmericanLifeProjectfoundthat72percentofthosesurveyed6allormostofwhattheyreadonhealthwebsites.Theyshouldn't.Lookupheadacheandthe7offindingreliableandcompleteinformationareonlyoneinten.Ofthe169websitestheresearchersratedonly16scoredashighquality.Recentstudiesfoundfaultyfactsaboutallsortsofotherdisorderscausingoneresearchteamto8thatalargeamountofincompleteinaccurateandevendangerousinformationexistsontheInternet. Theproblemismostpeopledon'tknowthesafewaytosurftheWeb.TheyuseasearchenginelikeGooglegetmillionsof9andstartclicking.Butthat'sriskybecausealmostanybodycanputupasitethatlooksauthoritative权威的soit'shardtoknowifwhatyou'rereadingis10ornotsaysDr.SarahBassfromtheNationalCancerInstitute.
Mostpeoplethinkofracingwhentheyseegreyhounds灰狗andbelievetheyneedlotsofexercise.Theycanactuallybequitelazy!Greyhoundsaregoodatfastracesbutnotlong﹣distancerunning.Theydoneedregularexercisebuttheyliketorunforashortburstandthengetbackonthebedoracomfortableseat.Anothermisunderstandingisthatgreyhoundsmustbeaggressive好斗的becausetheyarebiginsize.Infactgreyhoundslovepeopleandaregentlewithchildren. Greyhoundscanlivefor12﹣14yearsbutusuallyonlyracefortwoorthreeyearsandafterthattheymakegreatpets.Theydon'tneedalotofspacedon'tmakealotofnoiseanddon'teatalotfortheirsize. Normallygreyhoundscanbeastallas90cm.Thereishoweverasmall﹣sizedgreyhoundwhichstandsonly33cm.Greyhoundscomeinavarietyofcolors.Greyandyellowish﹣brownarethemostcommon.Othersincludeblackwhiteblueredandbrownoramixofthese. Greyhoundshavesmoothbodycoatslowbodyfatandareveryhealthy.Becausethey'reslim苗条的theydon'thavethelegproblemslikeotherdogsofthesameheight.Buttheydofeelthecoldespeciallysincetheywouldmuchratherbeathomeinbedthanwalkingaroundoutside. 1Thepassageismainlywrittento. A.tellpeoplehowtoraisegreyhounds B.letpeopleknowmoreaboutgreyhounds C.explainwhygreyhoundsareaggressive D.describegreyhoundsofdifferentcolors 2WhichofthefollowingisTRUEaboutgreyhounds? A.Theyaregoodatlongrunning. B.Theypreferoutdoorexercise. C.Theyarequitedifferentinsize. D.Theyaredifficulttoraise. 3Whydoestheauthorsaythatgreyhoundsmakegreatpets? A.Theyarebiginsize. B.Theyliveaverylonglife. C.Theycanrunracesforsometime. D.Theyarequietandeasytolookafter. 4Ifyoukeepapetgreyhounditisimportant. A.tokeepitslim B.totakespecialcareofitslegs C.tokeepitwarm D.totakeittoanimaldoctorsregularl
Tobehonestalotofpeopleattachgreattobecomingrichorfamous.
图中曲线ab表示物质跨膜运输的两种方式下列表述正确的是
Thoughthelittleboyisyounghismotherinsistedthathewashhisclothesbyhimself.
DirectionsWriteanEnglishcompositionin120﹣150wordsaccordingtotheinstructionsandthepicturesgivenbelow. 请根据以下的图片内容写一篇英文日记.可适当增加一定的细节.
Maryistoostubbornsosheisnotpopularinourclass.句型转换 →Maryisstubbornsheisnotpopularinourclass.
图为叶绿体结构模式图下列叙述中错误的是
IthinkthemovieGoawayMr.Tumoriswellworthseen.
Mr.Smithwhomthebookbelongslentittohisfriendsgenerously.
我们应该把课堂中学到的东西用于实践中.apply
动物细胞有丝分裂过程中染色单体形成和染色单体分开的时期分别是
我们应该密切关注空气质量.attention
曾经有一段时间他很沮丧想离开这里.翻译 →.
OnemorningIwaswaitingatthebusstopworriedaboutbeinglateforschool.Thereweremanypeople1waitatthebusstopandsomeofthemlookedveryanxiousanddisappointed.Whenthebusfinallycameweallhurriedonboard.Igotaplacenexttothewindow2Ihadagoodviewofthesidewalk.Aboyonabike3catchmyattention.He4ridebesidethebusandwavinghisarms.Iheardapassengerbehindmeshoutingtothedriverbutherefusedtostop5wereachedthenextstop.Stilltheboykeptriding.Hewascarryingsomethingoverhisshoulderandshouting.Finallywhenwecametothenextstoptheboyranuptothedoorofthebus.Iheard6excitedconversation.ThenthedriverstoodupandaskedDidanyoneloseasuitcaseatthelaststop?AwomanonthebusshoutedOhdear!It's7.Shepushedherwaytothedriverandtookthesuitcasethankfully.Everyoneonthebusbegantalkingabout8theboyhaddoneandthecrowdofstrangerssuddenlybecamefriendlytooneanother.
Hesaidtheyshouldnotbekeptstudyingfortheirdegrees.
判断一株高茎豌豆是纯合子还是杂合子最简单的方法是
Thenumberofthepeopleinvitedtothepartybefiftylastnightbutanumberofthemwereabsentfordifferentreasons.
Iwouldmuchappreciateifyoucouldcometomybirthdaypartythisweekend.
下列生物中属于原核生物的是
Haveyoueverhadtravelproblemsbecauseyourairplanewaslate?Itisacommonproblemanditisgettingworse.Airportdelaysmakepeopleangryandcostthecountrybillionsinlostworktime. TheFederalAviationAdministrationFAAisthegovernmentagencythatoverseesairtravel.Theystudiedtheproblemofairlinedelays. Theyfoundelevenmajorproblemsandsuggestedelevenwaystofixthem.Someoftheproblemsarecausedbecausedifferentregions地区ofthecountrydothingsdifferently.Theregionsdon'ttalktoeachotherenough.Someofthemneednewcomputers. Alsomoreplanesareflying.Astrongeconomyhasmorepeopleusingairplanestogetaround.Airplanesareaformofmasstransportationnowliketrainsandbuseswereinthepast.Moreplanesintheairportcausedelays. TheairportinSanFranciscoisagoodexample.Itisgrowingfast.ManypeoplegothroughSanFranciscotogettootherplacesaroundtheworld.RonWilsonoftheSanFranciscoInternationalAirportsaysIfyou'vegot18flightsthatallwanttotakeoffat800amandyou'reonthe18thplaneinlineyou'regoingtobe40minuteslate. Weatherisanothermainreasonfordelays.Weathercausesabout70%ofdelays.Fogorfreezingraincancausedelays. ThefirstthingtheFAAwantstodoistakecontrolawayfromtheregionsduringheavytraffictimesandbadweather.Anationalcenterwouldmakedecisionsonthingsthataffectthewholecountry.TheFAAalsowantstoputmoredistancebetweenplanesintheskywhentheweatherisbad.Thisrulecouldcauseevenmoredelays. TheFAAknowsthattheirsolutionswillnotsolvetheproblemswithairportdelays.Buttheyhopetomakethingsbetter.Therearejusttoomanyplanestoofewtrafficcontrollersandnotenoughnewtechnology. 1FAAfoundthatsomeofthedelayproblemsarecausedbybetweentworegions. A.differentlanguages B.technicalmisunderstanding C.misunderstandingoftherules D.lackofcommunication 2WhichofthefollowingisNOTmentionedasareasonforairlinedelays? A.Agrowingnumberofflights. B.Badweather. C.Agrowingpopulation. D.Lackofnewtechnology. 3Thewordoverseesin2ndparagraphprobablymeans. A.makesuseof B.takescontrolof C.catchesholdof D.doesafavorof 4Whichofthestatementsbestgivesthemainideaofthepassage? A.FAAshouldmakedecisionstostopairportdelays. B.Airportdelaysareontherise. C.Travelproblemscostbillionsinlostworktime. D.FAAhastakencontrolofairtrafficnationwide.
在西方国家如果交谈时缺乏眼神交流会被看作是不礼貌的行为.lackof
OnlythenIrealizetheimportanceofprotectingtheenvironment.
AccordingtothereportChinamayhavethelargestnumberofEnglishlearner.
Thestudentshadameetinginthebighalllastweekend.对划线部分强调 →.
如图反映某种酶的活性与温度的关系分析图可知
ThebookwhichI'mreadingitisveryinteresting.
热门题库
更多
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
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
教案备课库
高一上学期物理