明确热力学第二定律的意义,了解自发变化的共同 性质;了解第二定律和卡诺定理的联系;掌握U、H、S、F、 G的定义及其物理意义。明确△G在特定条件下的意义及 其判据作用;熟练地计算一些简单过程中的△S、△H、△G 及利用范特霍夫等温式判别化学反应的方向。熟练地运 用吉布斯一亥姆霍兹公式、克拉贝龙和克劳修斯一克拉 贝龙方程式,明确偏摩尔和化学势的意义、热力学第三 定律的意义及其相关计算

Note can develop good approximation of key aircraft motion(Phugoid) using simple balance between kinetic and potential energies. Consider an aircraft in steady, level flight with speed U and height ho. The motion is perturbed slightly so that

The forced response The steady state responseThe(t) has been switched into the circuit at some remote U.=V. cos ot time in the past, and the natural response has died-out completely. The forced response(steady state response)must satisfy the differential equation

Alexander Hamiton (1755~1804) Encarta Encyclopedia, Hulton Deutsch One of the boldest American political thinkers of his time. Hamilton developed the doctrine of implied powers, which supports liberal interpretation of the U.S Constitution. He also served as the nation's first secretary of the treasury

一、填空题(每小题2分,共20分) 1、在Q、W、U、H、S、G、T等物理量中, 属于体系容量性质的有 属于体系强度性质的有 属于体系状态函数的有 属于过程函数的有

52.1 Introduction 52.2 Theoretical Background Alexander C. Ehrlich 52.3 Relation to the Electronic Structure-(i) ot >1

current of one port into the voltage of the otherport and vice verse. U1 =-ais \2 =ai..gyration constant

1 Find F(s) if f(t) = (a)(t-3);(b)4t u(t-3); (c)4 cos to(t-3). 2 Obtain partial-fraction expansions for each of the following rational functions, and find the corresponding time functions:

A current i at Li produces an open circuit voltage u,at L2s dyal

Ohm's law states that voltage across many types of conducting materials is directly proportional to the current flowing through the material. U= Ri or R= i R--resis tance()( linear resistor) The resistor is a passive element that cannot deliver power or store energy