[今日更新][万唯中考]2024年河北省初中学业水平考试·万唯原创 模拟卷一.物理试卷答案

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possible,I'dliketobepositionedinInternationalTradeDepartment.Ihopemystartingsalarycanreach$9,000amonth.W:Hereyouwillstartat$7,000amonth.Inthreemonthsyouwillgoto$12,000.M:HowmanyhourswillIworkaday?W:Eighthours.Andfivedaysaweek,fromMondaytoFriday.M:OK,I'lltakeit.(Text9)W:Here'syourcoffee,sir.Iseeyoueverydayatthiscafe.You'renotfromaroundhere,areyou?M:Howdidyouknow?I'mfromtheUS,butI'velivedinRussiaforaboutayear.W:Yourclothingstyleissodifferentbutprettyinteresting.M:Ialsodon'tspeakRussianverywell,sothatmakesmestandouttoo.W:ManypeopleinMoscowspeakEnglishfortheirjobsinbusinessandfinance.Ihopeyouhaveplentyofpeoplewithwhomyoucancommunicate.M:Honestly,notreally.Igetabitlonelysometimes,butnothingcompareswithmychallen-geswiththewinterweather.W:Butwinterjustended!It'llbesummerbeforeyouknowit.M:Igrewupnexttothebeach,soI'llnevergetusedtotheRussianclimate.W:Then,howcomeyouleft?M:Well,lifetherewaseasy,butitlackedanyexcitementoradventure.W:HaveyoufoundthatadventurehereinRussia?M:Definitely.BecominganEnglishteacherhasbeenexcitingtoo.Also,gettingtomeetinter-estingpeoplelikeyou.W:Well,it'sbeengreattomeetyoutoo(Text10)M:Attention,please.Registrationforautumntermclassesnowbegins!Whetheryouplantoprepareforanewcareerorstudyagaininauniversity,WestLakeCommunityCollegeistheperfectplacetostart.Lastyear,ourcollegewaspopularwithpeople.Thisterm,weareexpectingevenmore.Whilethisisfantasticnewsforourcommunity,italsomeansthatclasseswillfillupquickly.Don'tcountonbeingabletoregisterlate,evenifyoudidsointhepast.Mostclasseswillbefullinoneweek.Newstudentstothecollegemustfilloutaform.Onceyouhavefilleditout,youmustturnitinatthestudents'office.BringyourIDcardand30dollarsforthestudenthealthcenterfee.Unfortunately,thisfeemustbepaidbyallstudents,eventhosewhoappliedforfinancialaid.Scholarshipsareavailabletocertainstudentsbasedonincomeandfamilysituation.Pleasevisitthefinancialaidofficeifyouhavequestions.Tochooseclassesnow,youcangoonlineusingyourstudentnumber.Youcanalsoregisterbyphone,butyoumayhavetowaitlongerthanifyouusetheonlinesystem.94【23·G3DY(新教材老高考)·英语·参考答案一R一必考一Y】

21.某同学购买了一款户外分体式燃气炉,准备去户外野炊。用该燃气炉烧水时,把初温为20^C的1kg的水加热到100^C,,燃烧了0.025m^3天然气。水的比热容c水=4.210^3J/(kg^C),,天然气的热值取410^7J/m^3。求:(1)水吸收的热量;(2)燃气炉烧水的效率。:0.025m3×4×10²51m³Q=cm△t=1×10bm³=4.2×103×1kg×(100℃-20℃=3.36×10535&4×1&01

(ⅢI)以下实验中,说法正确的是()A.在“用双缝干涉测量光的波长”实验中,干涉图样红光比绿光的条纹间距小B.在“探究可拆式变压器原副线圈沛数与电压关系”实验中,当原副线圈沛数比为100:400,测得副线圈电压为36V,那么原线圈的输入电压可能是10VC.“用油膜法估测油酸分子的大小”实验中,油酸酒精溶液久置,酒精会挥发,会导致分子直径的测量值偏小D.在“单摆测重力加速度”实验中,从平衡位置计时,将全振动次数n误记成n+1次,会导致测量g值偏大。

15.(18分)巴哥设计了如图15所示实验器材,在竖直平面内的粗糙斜面AB与水平传送带的左端平滑连接,水平传送带的右端与竖直面内圆心角为60^的圆弧轨道CD在最低点C处平滑连接,整个装置固定。斜面高为2m、倾角为45^,,传动带BC长为3m,以4m/s的速度逆时针转动,圆弧半径R=0.4m。,有质量m为1kg的小物块P从斜面上静止释放,小物块与斜面和传送带的动摩擦因数均为0.2,与圆弧轨道的摩擦忽略不计。取重力加速度g=10m/s^2。(1)若P从斜面高1m处释放,P在B处的速度大小以及D处的向心加速度大小;A(2)若P从斜面高2m>h>1m的不同位置释放,P从D射出后,这些轨迹的最高点构成什么形状?(3)若P从斜面高h处((0<h≤0.75m)释放,系统因摩擦而产生的热量(用h表示)。