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安徽省2023-2024学年度第二学期八年级期末监测(试题卷)-(物理)试卷答案试卷答案

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teampointsoutthatmoreresearchwillbeneededtoseeioherughtsboardsharks.Nexttheyplantocontinetoanalyethesharktheysleep,tolearnmoreabouttheirwakingandrestingstates.32.Whatisthepreviousmisunderstandingaboutsharks?A.Theysleepwiththeireyesclosed.BTheybreatheinflowingwater.C.Theyswimfrequentlyatnight.D.Theyal小vaysstayawakOT33.Whatdoresearchersfindaboutdraughtsboardsharks?A.Theyneedtoresteveryfiveminutesinthesea.B.Theyconsumemuchlessoxygenduringtheday.C.Theymightelosetheireyesnottosleepbuttoavoidlight.三D.Theyhavethesameposewhenawakeandwhenasleep.34.Whatdoesparagraph4talkabout?A.Theprocessoftheresearch.B.Thefindingsoftheresearch.C.Thesignificanceoftheresearch.D.Theintroductionoftheresearchers.35.Whatdoestheteamthinkoftheirresearchinthelastparagraph?A.Insufficient.B.Unrealistic.C.Meaningless.D.Inefficient.第二节（共5小题；每小题2.5分，满分12.5分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项

选项中有两项为多余选项

HowtoOvercometheFearofPublicSpeaking?Oneofthestrongestemotionsforyoumaybefear,especiallywhenyouaregivingaspeechortalkingtoanyoneinabighall.36Herearesometipsthatmayhelpyouovercomeit.3Whatisholdingyoubackfromgivingagreatspeech?Isitthefearofmakingmistakes?Isittheworrywhetheraudiencewilllikeitornot?Ordoyoujusthavethestagefright?Well,whatever,justberelaxedanddevoteyourselftothepreparations.Besides,ifpossible,gotothestagewhereyouwillbepresentinginadvance.Practiceyourentirepresentationafewtimesaheadoftime.Doitbeforeafewpeopleyouknowwellandaskfortheiradvice.It'salsoagoodideatopracticewithafewpeopleyou'renotfamiliarwith.Youcanalsomakeavideoofyourpresentation.38Don'tbeafraidofafewmomentsofstillness)Ifyoulosetrackofwhatyou'resayingduetonervousness,itmayseemasifyou'vebeensilentforalifetime.39Evenifit'songer,youraudienceisunlikelytomindapausetotakeinwhatyou'vesaid.Justtakeafeweepbreaths.【高二英语第？页（共10页）】·23-126B

安徽省2023-2024学年度第二学期八年级期末监测(试题卷)-(物理)试卷答案第一部分

2.如图所示,ab.cd是虚线圆的两条互相垂直的直径,O是虚线圆的圆心,等量的异种点电荷分别固定在ab两点,是虚线圆周上的一点,已知等量异种电荷的带电量均为Q、ab=5L,ae与ab的夹角为37^,规定无限远处电势为0,37^=0.6,37^=0.8,下列说法正确的是增大后减小A.c、d两点的电势不为0B.单位负电荷沿着直线从a移动到O再沿直线从O移动到d,电场力先C.c、d两点的场强均为4kQ25L^2D.e点的场强为337kQ144L^2

安徽省2023-2024学年度第二学期八年级期末监测(试题卷)-(物理)试卷答案第二部分（待更新）

15.(16分)如图甲所示,AB、CD为两光滑弧形轨道,底部水平,高度足够大,其下端B、C之间有一水平传送带,传送带水平部分的长度L=2m,B,C两点均与传送带靠近且等高,传送带以恒定的速度沿顺时针方向转动。将一质量m=0.5kg的小滑块甲(可视为质点)从弧形轨道AB上高h处由静止释放,小滑块甲到达弧形轨道CD上最高点时距C点的高度为h2,小滑块甲到达最高点后即被拿走,改变高度h1,多次重复上述操作,描绘h2、h1之间的关系图像如图乙所示,重力加速度g=10m/s^2。(1)求传送带的速度大小和小滑块甲与传送带之间的动摩擦因数i(2)当h1=1.0125m时,求小滑块甲经过传送带的过程中因摩擦而产生的热量;(3)若在C点放置另一个质量为2π的小滑块乙(可视为质点),将小滑块甲从弧形轨道AB上某处由静止释放,小滑块甲经过传送带后与小滑块乙发生弹性正碰,碰撞后小滑块甲恰好未达到B点,求小滑块甲开始释放时的高度。