首页
登录
职称英语
A circular wheel travels along a flat surface at a constant rate of 2.5 feet per
A circular wheel travels along a flat surface at a constant rate of 2.5 feet per
游客
2024-01-13
44
管理
问题
A circular wheel travels along a flat surface at a constant rate of 2.5 feet per second. How many complete revolutions will the wheel make in 50 seconds if its diameter is 3 feet?
选项
A、6
B、10
C、13
D、14
E、19
答案
C
解析
50秒内轮子走过的距离:轮子的周长(πd)×圈数。50×2.5=π×3×revolutions=13<revolution<14。
转载请注明原文地址:https://tihaiku.com/zcyy/3360237.html
相关试题推荐
Constantshowersarecharacteristic________thesummerhere.A、forB、toC、ofD、wit
Acircularwheeltravelsalongaflatsurfaceataconstantrateof2.5feetper
Thetopsurfaceareaofasquaretabletopwaschangedsothatoneofthedimensi
Acircularrim28inchesindiameterrotatesthesamenumberofinchespersecon
MachinesXandYrunatdifferentconstantrates,andmachineXcancompleteace
Inthefigureabove,theareaofthecircularregionwithcenterOis16π,ifAB
MostofEarth’ssurfaceisocean.Theoceanfloorisinaccessibleforextensive
Whenevidenceoffinancialwrongdoingbyanelectedofficialsurfaces,itisthe
In1974alargeareaofthesurfaceofMercurywasphotographedfromvaryingdis
Incontrastwithadarksurfaceanditstendencytowardheatabsorption,alarge
随机试题
HowmanyrefugeescamefromVietnamsincetheearly1970s?[br][originaltext]
WhentheUnitedStatesCongresscreatedYellowstoneNationalParkin187
[originaltext]Aspopulationscontinuetoage,moreandmorepeoplearegoin
[originaltext]Whalesarehuge,butdifficulttosee,whichaddstotheirmy
承受轴向压力的细长压杆,其()。A、压力越大,稳定性越好 B、压力越大,稳定性
下列哪项不符合急性淋巴细胞白血病的特征A.白血病细胞PAS染色可呈阳性反应B.白
运输爆破材料的汽车在视线良好的情况下行驶时,时速不得超过( )km。 A、
左边给定的是纸盒的外表面,下面哪一项不能由它折叠而成? A.如上图所示 B.
均衡价格随着( )。[农村信用社、中国农业银行真题]A.供给和需求的增加而上升
第47题答案是__________A.pretend B.forget C.
最新回复
(
0
)