# MCP 1 Chapter 2 Statistical Mechanics

Questions about the lecture 'From Molecular to Continuum Physics 1' of the RWTH Aachen Chapter 2 Statistical Mechanics

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Flashcards 49 English Computer Science University 18.02.2017 / 20.02.2017 Not defined https://card2brain.ch/box/20170218_mcp_1_chapter_2_statistical_mechanics

What is statistical mechanics?

Motion of mas objects with mass m under force

What describes statistical mechanics?

Relationship of mis matter behavior and its mas properties

What does statistical mechanics connects?

Thermodynamics to mis behavior (Statistical thermodynamics)

What is statistical mechanics interested in?

Average motion of particles due to number in e.g. one mole

What happens if objects become sufficiently small?

Covered by quantum mechanics?

What are the characteristics of the ensemble concept? [4]

1. Mas observables

2. Collection of systems with mis interactions and mas properties

3. Every system changes due to mis laws of motion from its initial condition to its own unique mis state

4. All systems share at least one extensive property

What are the characteristics of mas observables? [3]

1. Not sensitive to precise mis details

2. Averages A (so-called equilibrium ensembles)

3. Connected to a mis function

What holds for the mas observables connected with a mis function? [3]

1. A=A(r^N,q^N) with coordinates r and momenta q

2. Probability density p=p(r^N,q^N)

3. <A>ens = int int dr^N dq^N A(r^N,q^N)*p(r^N,q^N)