Thermal physics - KTG dbts (some of them)

Q1. While gas from a cooking cylinder is used, pressure does not fall appreciably till the last few minutes. Why?

Q2. When we place a gas cylinder on a van and the van moves, does the kinetic energy of the molecules increase? Does the temperature increase?
My ans: KE increases, Temp remains same

Q3. Can we define the temperature of vacuum? The temperature of a single molecule?

Q4. Comment on the following statement. The temperature of all molecules in a sample of gas is the same.

Q5. A gas is kept in a rigid container. If a load of 10kg is put on the top of the container, does the pressure increase?

#Physics #Thermal physics

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eureka123 ·2010-02-16 02:43:49

ans1
http://books.google.com/books?id=jegDAAAAMBAJ&pg=PA857&lpg=PA857&dq=While+gas+from+a+cooking+cylinder+is+used,+pressure+does+not+fall+appreciably+till+the+last+few+minutes&source=bl&ots=dznBeT56Tj&sig=FmyG7etXAcm_h0kKfmfJ6nC6ev8&hl=en&ei=hXV6S9WwCs--rAesmLT1Dw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CAYQ6AEwAA#v=onepage&q=&f=false

ans2
KE sample =fnRT/2 which depends only on temp...so i dont think there will eb any effect on KE of sample

ans3
http://www.kutl.kyushu-u.ac.jp/seminar/MicroWorld1_E/Part3_E/P33_E/SH_of_vacuum_E.htm

ans4 If temp is same ..then avg energy of sample is same
KE=K_bT/2

ans5 I dont think pressure should change...

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Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω

KTG dbts (some of them)

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