Lecture 2 Flashcards

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1
Q

dU = δQ + δW

A

dU is the infinitesimal change in internal energy

δQ is the infinitesimal heat or thermal energy

δW is the infinitesimal work

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2
Q

dU is an

A

exact differential

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3
Q

δQ and δW

A

are inexact differentials

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4
Q

inexact differentials often relate to

A

irreversible processes

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5
Q

δQ = 0

A

is an adiabatic process

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6
Q

quasistatic process

A

a series of infinitesimal equilibrium states/changes

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7
Q

δW =

A

-PdV

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8
Q

recipproal theorem

A

(dx/dy)z = (dy/dx)^-1 z

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9
Q

reciprocity theorem

A

(dx/dy)z (dy/dz)x (dz/dx)y = -1

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10
Q

the chain rule of differentiation

A

(dx/dz)g = (dx/dy)g (dy/dz)g

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11
Q

definition of a non-natural derivative

A

take a derivative with respect to a variable and keep another variable fixed, which is not one of the natural derivatives

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