12 The figure shows two blocks A and B, each of mass m, connected by two light springs to a fixed support. Each spring has a force constant k. What is the total extension of the system when it is at static equilibrium?D A mg/(2k)A B 3mg/(2k) C 2mglk D3mglk 相关知识点: ...
QUESTION FOUR Two blocks A and B are connected by a string of negligible mass.The mass of A is 4 kg and the mass of B is 2 kg.Block B is pushed by a force Z of magnitude 40 N acting at an angle of 300 to the horizontal.The coefficient of kinetic fiction between block B and ...
Walk ___two blocks and turn right. ( ) A. to B. at C. for 相关知识点: 试题来源: 解析 C 步行过两个街区然后右拐.考查介词辨析,句子表示"步行过两个街区然后右拐",A.to 去,不构成搭配,不符合题意,B.at在,用于小地点或几点钟,不过符合题意,C.for与动词"walk"形式搭配,符合题意.故选:C...
百度试题 结果1 题目Walk two blocks and ___ left on Oak Street. A turning B turn C turned 相关知识点: 试题来源: 解析 B 解析见答案 反馈 收藏
百度试题 结果1 题目英译中。Walk west for two blocks and you'll be there. A. 往西走两条街道就到了。 B. 往西走两个街区就到了。 C. 往西走过两个市场就到了。 相关知识点: 试题来源: 解析 B 反馈 收藏
解析 B 题目要求选择一个合适的词语填空,使得句子完整通顺。 - Go straight two blocks and ___ left. 直走两个街区然后___左转。 - A. on 在...上面 - B. turn 转向 - C. down 向下 根据句意,应该是直走两个街区,然后左转。turn left是固定搭配,表示左转。反馈 收藏 ...
百度试题 结果1 题目3. A. About two blocks.【题目】B. AbOutfour:olocks.C AbOutsinxlockS. 相关知识点: 试题来源: 解析 【解析】C 反馈 收藏
百度试题 结果1 题目What can be found two blocks away? A. A store. B. A market. C. A shopping center. 相关知识点: 试题来源: 解析 B 略 反馈 收藏
19 Two blocks, X and Y, which are made of the same metal, are heated by heaters of the same power rating. The variations of temperature with time are given in the figure below.temp/C个X6-Y520t/s What is the ratio of the mass of X to the mass of Y? B A 1:3 C 3:4 ...
The wear rate of such resins and their enamel antagonists is unknown. The purpose of this study was to test and compare the 2-body wear rate of CAD/CAM resin blocks. Wear specimens (N=42, n=6) were made from 5 CAD/CAM resins: ZENO PMMA (ZP), artBloc Temp (AT), Telio CAD (TC...