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唐山市2025届高三年级摸底考试（9月）-(物理)试卷答案试卷答案

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是全国©o所名校高考便以立heydiscoveredthat66oftheparticipantsatethesamebreakfastatstwicenek、andFemahpopledloeeetenAeiansd,(3%and526,respetively).Bycomparison,justofthepeoplerepeatedadinnertheyhadalreadyeaten,andthisrepetitionwashigherfortheAmericanparticipants(16%)thanfortheFrenchparticipants(6%)28.Whatdomanypeoplethinkofbreakfastinthetext?A.Itisusuallytasteless.B.Itmakespeopleexcited.C.Ithelpsrefreshthebody.D.Itschoicesareactuallylimited.29.Whatdoestheunddordprobablymean?A.Meaningless.密B.Flexible.C.Weak.D.Vital.30.Whatmaytheauthordiscussinthefollowingparagraph?A.Thereasonwhyscientistsconductsuchresearch.颜黄以小B.Theculturaldriversthataffectbreakfastchoices.9o动2（房o6W,C.TheeffeetsofbreakfastonAmericansandFrenchmen.D.Thelimitsoftheresearchanditsfurtherprocedures.3o6n0与论31.Whatisthetextmainlyabout?no2627o1s1形封A.Howimportantbreakfastistohealth.Ceood5gvIluanamowsobodw.SB.Whatpeopleusuallychooseforbreakfast.,日olC.Whypeopleeatthesamethingforbreakfast.ss行es5no76D.Whybreakfastchoicesarediverseamongpeople.于noo2bo99DAdultsareoftenembarrassedaboutaskingforhelp.It'sanactthatcanmakepeoplefeelweak.Themomentyouaskfordirections,afterall,yourevealthatyoumaybelost.Seeking线someone'sassistancecanmakeyoufeellikeyouarebroadcastingyourincompetence.Newresearchsuggestsyoungchildrendon'tseekhelpinschool,evenwhentheyneedit,forthesamereason.Untilrelativelyrecently,psychologistsassumedthatchildrendidnotarttocareabouttheirreputationandschoolmatesjudgementuntilaroundagenine.Butaaveoffindingsinthepastfewyearshaspushedbackagainstthatassumption.ThisresearchrevealedthatchildrenasyoungivecredeeplyabouthewaythersthinkboueInfact,kidssomosfarastochtaimplemsnrkmOurresearchsuthat,rlysesvchildrenbegntoconfo14【23新高考·JD·英语-QG)

唐山市2025届高三年级摸底考试（9月）-(物理)试卷答案第一部分

17.(14分)如图所示,光滑钉子M、N相距2L,处于同一高度。带有光滑小孔的小球A穿过轻绳,轻绳的一端固定在钉子M上,另一端绕过钉子N与小球B相连,B球质量为m。。用手将A球托住静止在M、N连线的中点P处,B球也处于静止状态,放手后,A球下落的最大距离为,已知重力加速度为(1)求A球的质量mA(2)求A球下落到最低点时绳中张力(3)用质量为m的C球替换A球,C球从P点由静止释放后,求C球下落距离为L时的速度大小vc。NA

唐山市2025届高三年级摸底考试（9月）-(物理)试卷答案第二部分（待更新）

9.如图,水平传送带上表面的右侧,与一个竖直的光滑半圆轨道底端相接,在半圆轨道下端道下端O放一量为m的滑块A,传送带以速率v0沿顺时针转动,现在传送带的针转动,现在传送带的左端轻轻放上一个质量也为m的滑块B,物块与传送带的动摩擦因数为,物块B以速度为v0与A发生弹性碰撞两滑块可视为质点,求A.传送带至少长v0^22uk