Non-Inertial Reference Frame Gravitational attraction The Law of Universal Attraction was already introduced in lecture D1. The law postulates that the force of attraction between any two particles, of masses M and m, respectively, has a magnitude, F, given by F= (1) where r is the distance between the two particles, and G is the universal constant of gravitation. The value of G is empirically determined to be

Intensive Study Marriage Across the Nations Para. 1 Gail and I imagined quiet wedding. During our two years together we had experienced the usual ups and downs of a couple learning to know, understand, and respect each other. But through it all we had honestly confronted the

For a two-solvent recrystallization, you should have one solvent (solvent #1) in which your desired compound is soluble at the boiling point. The second solvent(solvent #)should induce crystallization when added to a saturated solution of your compound in the primary solvent. Reference:

Basic Structure Fiqure 15.1 shows the series of steps used to compute a person's tax liability. Step 1: Compute Adjusted Gross Income (AGI) Step 2: Convert AG/ into taxable income by subtracting exemptions and deductions Step 3: Compute tax due by applying a rate schedule, and subtracting tax credits

一、单项选择题 1、操作系统是一种(B)。 A.应用软件B.系统软件C.通用软件D.工具软件 2、操作系统是一组(C)。 A.文件管理程序B.中断处理程序 C.资源管理程序D.设备管理程序

目 录 1学科基础课必修课程 《国际经济学》 《国际金融 A》 《国际金融 B》 2学科基础课平台选修课程 《国际贸易社会调查》 《卫生经济学》 《外汇交易》 《国际投资学》 《国际税收》 《世界政治与经济》 《国际经济与贸易专业导论》 《高级经贸英语１》 《高级经贸英语２》 《高级经贸英语 2》 3专业课平台必修课 《国际贸易实务 A》 《国际服务贸易》 《商务英语函电》 《国际商务谈判》（双语） 《国贸毕业论文》 《国际贸易专业实习》 《国际贸易毕业实习》 《国贸认知实习》 《国贸学年论文》 4专业课平台选修课程 《报关实务》 《报检实务》 《国际贸易地理》 《跨文化管理》 《商务英语写译》 《《国际贸易社会调查》 《国际贸易制度》

Inertial reference frames In the previous lecture, we derived an expression that related the accelerations observed using two reference frames, A and B, which are in relative motion with respect to each other. aA =aB+(aA/ B)'y'' 22 x (DA/ B) 'y'2'+ TA/B+ X TA/B). (1) Here, aA is the acceleration of particle A observed by one observer, and

The Normal Distribution: the distribution of a continuous r.v. whose value depends on a number of factors, yet no single factor dominates the other. 1. Properties of the normal distribution: 1)The normal distribution curve is symmetrical around its mean valueu. 2)The PDF of the distribution is the highest at its mean value but tails off at its extremities

We have seen that the work done by a force F on a particle is given by dw =. dr. If the work done by F, when the particle moves from any position TI to any position T2, can be expressed as, W12=fdr=-(V(r2)-V(1)=V-v2, (1) then we say that the force is conservative. In the above expression, the scalar

一、例题精解 【例题20.1】单相桥式可控整流电路如图20.1所示,已知R=20Q,要求U在0-60V 的范围内连续可调。(1)估算变压器副边电压值U2(考虑电源电压的10%波动); (2)求晶闸管控制角a的变化范围;(3)如果不用变压器,直接将整流电路的输入 端接在220V的交流电源上,要使U仍在060V范围内变化,问晶闸管的控制角a又将 怎样变化?