首页
登录
职称英语
A circular rim 28 inches in diameter rotates the same number of inches per secon
A circular rim 28 inches in diameter rotates the same number of inches per secon
游客
2025-02-27
8
管理
问题
A circular rim 28 inches in diameter rotates the same number of inches per second as a circular rim 35 inches in diameter.If the smaller rim makes X revolutions per second,how many revolutions per minute does the larger rim make in terms of X?
选项
A、48π/X
B、75X
C、48X
D、24X
E、X/75
答案
C
解析
Since the smaller rim has diameter 28 inches and rotates x revolutions per second, it rotates 2Snx inches per second. If y represents the number of revolutions the larger rim rotates per second, then the larger rim rotates 35πy inches per second. Since the rims rotate the same number of inches per second, it follows that 28πx = 35πy.
Then y =28x/35=4x/5 inches per second or 4x/5(60) = 48x inches per minute.
The correct answer is C.
转载请注明原文地址:https://tihaiku.com/zcyy/3974648.html
相关试题推荐
Thecardinalityofafinitesetisthenumberofelementsintheset.Whatisthe
An“Armstrongnumber”isann-digitnumberthatisequaltothesumofthenthp
Bobhas40coinsconsistingonlyofdimesandquarters.Ifthenumberofdimesi
Theproductofapositiveintegeraand1080isasquarenumber.Whatisthelea
Onacertainnumberline,if8isdistanceof18fromn,and17ishedistanceo
When-ofacertainnumberissubtractedfromthenumberandthenthisdifferenc
Selectonenumberfromtheset{0,1,2,3,4,5,6,7,8,9},takedownitsval
Rollinganumbercubewithfacesnumbered1to6(similartoa6-sideddie)isa
X,YareinasetwhichhaspropertyPthatanyrealnumberbetweenX,Yalsobe
WhichofthefollowingnumbersisNOTthesumofthreeconsecutiveoddintegers?
随机试题
EachofQuestions1to7presentstwoquantities.QuantityAandQuantityB.Com
Soviet’sNewWorkingWeekHistorianinvestigateshowStalinchangedthecalendar
女士们、先生们,朋友们:在中国农历新年伊始,我很荣幸访问英国,并出席“时代中国”活动开幕式。我谨代表中国政府,对“时代中国”活动的隆重开幕表示热烈祝贺
______nofurtherbusiness,theChairmanclosedthemeeting.A、ThereisB、Therew
关于难免流产下列哪项是正确的A.流产已不可避免 B.妊娠产物已部分排出体外
女性,28岁。近4天来出现低热、刺激性干咳,伴左侧胸痛。查体:双肺叩诊清音,双肺
A. B. C. D.
2018年6月6日,甲公司在P银行开立主办账户,并与其签订协议开通
根据《标准施工招标文件》,施工合同履行过程中发生过程变更时,由( )向承包人发出
某施工项目经理对商品混凝土的施工成本进行分析,发现其目标成本是44万元,实际成本
最新回复
(
0
)