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
33
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:http://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
A、Showingotherpeoplehowmuchwecareaboutthem.B、Respectingthefeelingsan
系统规划的主要任务是()。A.明确组织的信息需求、制定系统总体结构方案 B
健康教育计划的()是用来评估健康教育/健康促进项目导致的目标人群健康相关行为及其
胆管癌主要的临床表现是A.恶心呕吐 B.无痛性黄疸 C.厌食 D.
《中华人民共和国教育法》的制定主体是( )。A.中共中央委员会 B.国务院
证券市场投资者按照不同标准可以进行不同的分类。下列不属于证券市场投资者分类依据的
长江三角洲城市2002年主要经济指标一览表 财政收入占国内生产总值的比重
(2017年5月)以下有关工作岗位评价的说法,不正确的是( )。A.岗位评价的
胶艾汤主治( ) A.阴虚内热,冲脉不固之崩漏 B.脾气虚弱,冲脉不固之崩
(2020年真题)采用概算定额法编制设计概算的主要工作有:①列出分部分项工程项目
最新回复
(
0
)