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陕西省汉中市普通高中一年级新高考适应性考试(24-587A)试题(数学)试卷答案
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Some690millionpeoplegohungryeachyear.Morethan3billionpeoplecan'taffordahealthydiet.Atthesametime,theactivitiesthathadproducedallofthelostandwastedfoodpro-duced8to10percentofallglobalgreenhouse-gasemissions.Re-ducingfoodwastecouldeasehungerandpotentiallylowerthatpollution.That'stheconclusionofFoodWasteIndexReport2021.Ottosaid,"Wethoughtwastewasmainlyaprobleminrichcountries.Infact,thenewreportfinds,foodwasteisabigprobleminnationsrichandpoor.Whilethereportisthebestanalysisoftheissuetodate,severaldatagapsremain.Thecountriessurveyedarehometojust75percentoftheworld'spopulation.Whathappensinother
10.一半径为r的小球紧贴竖直放置的光滑圆形真空管道做圆周运动,如图甲所示。小球运动到最高点时,小球的速度大小为v,管壁对小球的vFN,FN-v^2作用力大小为F,其FNv²图像如图乙所示。已知重力加速度为g。g。则下列说法正确的是的A.小球的质量为B.圆形管道内侧壁半径为cg-rC.当v^2=d时,D.小球在最低点
