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In this lecture we will look at some applications of Newton's second law, expressed in the different coordinate systems that were introduced in lectures D3-D5. Recall that Newton's second law F=ma, (1) is a vector equation which is valid for inertial observers. In general, we will be interested in determining the motion of a particle given
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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
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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
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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
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一、爱情及其特征 1、爱情是什么别林斯基说:“爱情是两个亲密的灵魂在一般生活方面,在忠实、善良、美的事物方面的和谐和默契
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一、概念 1、定义 项目是指具有明确目标、受一定条件约束的一次性任务。 美国项目管理协会(Project Management Institute,PMI)认为,项目是为完成某一独特的产品或服务所做的一次性努力。·IS10006定义项目为:“具有独特的过程,有开始和结束日期,由一系列相互协调和受控的活动组成。过程的实施是为了达到规定的目标,包括满足时间、费用和资源等约束条件
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《多媒体技术基础》的内容参考了美国、加拿大和欧洲等著名大学有关多媒体课程的教 学大纲之后拟定的。本教材由下列四个部分组成:(1)多媒体的表示和计算(第2~13章,主 要介绍声音、图像和数字电视媒体的基本知识和编码方法。(2)多媒体的存储(第14~16章) 主要介绍CD和DVD存储器的存储原理和多媒体在存储器中的存放格式
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一、城市草坪建设意义与我国发展概况 1、城市草坪建设意义 ①城市绿化作用;②城市美化作用;③城市净化作用;④城市消防作用;⑤城市消音作用;⑥城市健康作用;⑦城市生态作用;⑧城市产业作用
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第一节:服装服饰的基本概念 第二节:服装服饰的三要素 面料——覆盖躯体,保护、装饰、表现的作用 款式——塑造型,修正体型的作用 色彩——美化人体,表现风俗礼仪的作用 第三节 服装款式图的绘制
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Introduction A primary goal of your efforts in this course will be to gather empirical data so as to prove(or disprove) your hypothesis Typically the data that you gather will not directly satisfy this goal Rather, it will be necessary to \reduce\the data. to put it into an appropriate form, so that you can
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