Due Sept 17. 2002 1. a) Mean free path 2= kBI d-p where k=1.38×102,T=293K,p=10mTor=133Pa,d=1A=100m 38×10-3(293 6.9cm ford=1A Jr(m)(332)017mfrd=2A b) Use the ideal gas law pV=nkB T 1.33Pa vk7(138×102X90)33×10m-33×10cm3
Some Properties 1. ∆n is consistent. 2. Γ ⊆ ∆n ⊆ ∆n+1 ⊆ ∆Γ 3. ∆Γ is complete. 4. If ∆Γ ` A then there exists n ∈ N such that ∆n ` A. 5. A ∈ ∆Γ iff ∆Γ ` A 6. ∆Γ is consistent
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