lec23rqh

lec23rqh Lecture 23: First and Second Laws of Thermodynamics

1. ans: 7,500 J; work = pressure * volume change.

9. ans: 2446 J/K; DQ/T = 2*3.34 x10⁵/273.

3. ans: 10338 J/K; DQ/T = mgh/T =1800*9.8*160/273.

4. ans: (P₁ + P₂)(V₂ - V₁)/2; the "area" under the path.