安徽省泗县2023-2024学年度第二学期七年级期中质量检测物理试卷答案试卷答案,炎德英才答案网站目前收集并整理关于安徽省泗县2023-2024学年度第二学期七年级期中质量检测物理试卷答案试卷答案得系列试题及其答案，更多试题答案请关注我们
安徽省泗县2023-2024学年度第二学期七年级期中质量检测物理试卷答案试卷答案
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M:Nutsandgreensaresomethingwealreadyeatplentyof.Andalthoughourtypeofrice-thewhitekind-isn'tonthelist,brownriceis.W:ThenIthinkwewillswitchtothattokeepthefamilyhealthy.Superfoodssoundlikeaverytastywaytokeepfit.(Text9)W:What'stheproblem?M:I'vebeengettingapaininmyforeheadrecently.W:Haveyouhadanycoldsorflurecently?M:Ihadacoldacoupleofweeksago,butthat'sgone.W:Areyoustudyingalot?Areyougettingenoughsleep?M:Yes.I'mstudyingquitealot,butI'mmakingsuretosleepplenty.Iusuallygotobedaround11,andIamupatabouteight,soIhavetimetogorunningforhalfanhourbeforegoingtotheuniversityatnine.W:Quitehealthy.Hasthispainkeptyouawake?M:Yes,itmakesgettingtosleepharder.It'smuchworseattheendoftheday.Ihardlyno-ticeitinthemorningorintheafternoon.W:Areyoueatingproperly?M:Ithinkso.Mymothercooksmymeals.W:Youdon'twearglasses,right?Whendidyoulasthaveyoureyesexamined?M:WhenIwasachild.W:Thatmaybetheproblem.Ithinkyoushouldgetthatdoneagain.Inthemeantime,takethispillwhenyou'reinpain,andcometoseemeagaininaweek.M:OK.Thankyou.(Text10)M:Sellingyourthingsonlinehelpsyougetridofthoseyoudon'tneed,anditcanalsobeagreatsourceofincome.Onethingyouneedtoconsidercarefullyistheplatformonwhichyouaregoingtoadver-tise.Mostbigplatformsinthefieldaresopopularwithsellers,notjustbecausetheycangiveyouaccesstoabiggerpoolofpotentialcustomers,butalsobecausetheyofferinsurance.Thedisadvantage,however,isthatyouwillneedtopaysomemoneyforusingtheplat-form.Youcanusesomeplatformsthateitherchargeasmallerfeeforadvertisingorevennofeeatall-but,inthatcase,whatyouwillneedtokeepinmindisyoursafety.It'salwaysbesttomeetthebuyerduringthedayatapublicplacesuchasacoffeeshop,alibrary,orasupermarketparkinglot-anywheremonitoredbysecuritycamerasisgood.Afewmorethingstokeepinmind:alwaysbeaccuratewithyourdescriptionsofthethingsyouareselling.Thelastthingyouwantistobeaccusedofcheatingandbannedfromthewebsite.Moreover,becarefulwithyourpersonalinformation.在114：【23·G3DY(新教材老高考)·英语·参考答案一R一必考一N】
安徽省泗县2023-2024学年度第二学期七年级期中质量检测物理试卷答案第一部分
12.如图所示,两平行金属轨道间距为L,与水平方向夹角为=37^,,轨道电阻不计,垂直轨道放置两根质量分别为m和3m的金属棒a、b,有效阻值分别为R和3R,金属棒与轨道间的动摩擦因数均为k=0.750整个装置处在垂直轨道向下的匀强磁场中,磁感应强度大小为,给a棒一个沿轨道向下的初速度v0.,同时&棒由静止释放,两金属棒与轨道间接触始终良好。已知金属棒a、b间的距离足够大,37^=0.6,37^=0.8,,下列说法正确的是A.a棒的加速度先减小后增大,两棒间距一直减小B.b棒开始运动时的加速度大小为B^2L^2Ln12mRC.整个过程中a棒产生的焦耳热两间距的变化量为3mRe0B^2L^2
安徽省泗县2023-2024学年度第二学期七年级期中质量检测物理试卷答案第二部分（待更新）
15.(16分)如图所示,静置在光滑水平地面(足够大)的木块由水平部分和半径为直圆弧轨道AB组成,水平轨道与圆弧轨道相切于B点,圆弧轨道在A点的切线竖直向视AB上,其右端固定有水平轻弹簧,弹簧处于原长时左端在B点,一质量为m的滑块(可视的水平恒力R.C为质点)将弹簧压缩到C点后锁定,此时弹簧的压缩量为R,现用F=34mg块质向左推木块,整体向左运动2R距离后撤去F,同时解除对滑块的锁定。已知木块质量2RF,,重力M=2m,,弹簧劲度系数k=6mgR,弹簧弹性势能E,与形变量x的关系E,-k,EnxEp=12kx^2,加速度为g,,不计滑块与木块间的摩擦。求(1)撤去恒力F时,木块的速率;(2)滑块经过圆弧轨道最低点B时对轨道的压力;(3)滑块运动过程中离BC面的最大高度,ARFBC
