- Thedryfootprintsattheebbofthetidemaybemarkedwithsunshineorhaze.ItwasclearthattheVarnumfortuneswereattheebb,butthetwowomendidwhattheycouldtopreserveadecentdignity.AnalysesofthevelocitydataatNo.14StationofChengjiawuchannelfortwotidalperiodsshowthatthee...
- 19914
- 1、TheoceansebbandflowforYou.2、Theebbandflowofyourlifemirrorstheebbandflowofalllife.3、Lifeisebbandflow,giveandreceive.4、Shewassufferingamysteriousebbandflowofmood5、Isawtheebbandflowofthesea.6、It'saboutlifestyleandideas,peopleandmanners,thingsth...
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- Andasnoonapproaches,thetidebeginstoebbaway.Ittookmorethan10,000yearsofdomesticationforhumanstocreatethevastbiodiversityinourfoodsupplythatwe'renowwatchingebbaway.Asthedayworeon,thelife-bloodseemedtoebbawayfromUrsula,andwithintheemptinessaheavydespai...
- 11678
- It'saboutlifestyleandideas,peopleandmanners,thingsthatebbandflow.Thatebbtideisfullofdustfootprints,leavingsomesand,whereyoumayburythemostforthrightwounds....
- 8400
- Hisinfluenceisontheebb.Asthatstartedtoebb,Islowed.Thefloodandebbtidesalternateswitheachother.Freshordersfortheworld'sshipyardsareatalowebb.Thereisanaturalebbandflowofenergythroughouttheday.I'veaddedrackadaptersformongrel,eventedmongrel,thin,ebbandw...
- 24209
- Wesawthespringebbtide.Onthebeachaftertheebbtide,themulticoloredshellsareeverywhere.InLujiangCounty,amanofloftyidealshasnotgonethroughtheebbtide,buthestilldoesnotknowwhoisahero.Perhapsthisisanoutcomethatisdoomedtonoanswer.Atthisebbtide,theriverflowsla...
- 29111
- 問題詳情:如圖所示,電場中有A、B兩點,則下列説法正確的是()A.電勢φA>φB,場強EA<EBB.電勢φA<φB,場強EA>EBC.將+q電荷從A點移到B點電場力做負功D.將-q電荷分別放在A、B兩點時具有的電勢能EpA<EpB【回答】D知識點:電勢能和電勢題型:選擇題...
- 27132
- 問題詳情:如圖所示的電場中有A、B兩點,下列判斷正確的是()A.電勢φA>φB,場強EA>EBB.電勢φA>φB,場強EA<EBC.將電荷量為q的正電荷從A點移到B點,電場力做正功,電勢能減少D.將電荷量為q的負電荷分別放在A、B兩點,電荷具有的電勢能EpA>EpB【回答】*:BC解析:順着電場線電勢逐漸降低,即φA>...
- 4246
- 問題詳情:如圖所示,電場中有A、B兩點,則下列説法中正確的是()A.電勢φA>φB,場強EA<EBB.電勢φA<φB,場強EA>EBC.將+q從A點移動到B點,靜電力做正功D.將﹣q分別放在A、B兩點時具有的電勢能EpA>EpB【回答】解:AB、電場線越密的地方電場強度越大,所以場強EA>EB,沿着電場線電勢一定降低,所以電勢∅A>∅...
- 7180
- 問題詳情:如圖所示為點電荷Q的電場中的三條電場線,下列説法正確的是( )A.若Q為負電荷,EA<EBB.若Q為負電荷,EA>EBC.若Q為正電荷,EA<EBD.若Q為正電荷,EA>EB【回答】BD【詳解】由於不知道電場線的方向,所以不能判斷該電場是正電荷還是負電荷產生的,但是無論是正電荷還是負電荷,都是A點的電場...
- 25548
- 問題詳情:如圖所示,是一*正點荷形成電場中的一條電場線,線段AB=BC,則()A.電場強度比較是EA>EBB.電勢比較是φA<φBC.電勢差比較是UAB>UBCD.檢驗電荷沿AC方向移動電場力不做功【回答】解:A、由題意,該電場是正點電荷產生,則知該正點電荷必定在A的左側,A點離正點電荷最近,場強最大,故EA>EB.故A正...
- 32533
- 問題詳情:A、B兩電源分別供電時其特*曲線如圖所示,則下述正確的是()A.電源電動勢EA=EBB.電源內阻rA=rBC.外電路電阻相同時,電源B的輸出功率較大D.總電流相同時,電源A輸出功率較大【回答】解:由閉合電路歐姆定律得U=E﹣Ir,當I=0時,U=E,U﹣I圖線的斜率等於電源內阻大小.A、由圖看出,A的電動勢為...
- 28391