using System; using L=Science.Physics.GeneralPhysics; namespace Serway.Chapter20 { /// /// Example07: Boiling Water /// Suppose 1.00 g of water vaporizes isobarically at atmospheric /// pressure (1.013 \times 10^5 Pa). Its volume in the liquid state /// is V_i = V_{liquid} = 1.00 cm^3, and its volume in the vapor /// state is V_f = V_{vapor} = 1671 cm^3. Find the work done in the /// expansion and the change in internal energy of the system. /// Ignore any mixing of the steam and the surrounding air - /// imagine that the steam simply pushes the surrounding air /// out of the way. /// W = - 169 J /// \Delta E_{int} = 2.09 kJ /// public class Example07 { public Example07() { } private string result; public string Result { get{return result;} } public void Compute() { L.Work W = new L.Work(); W.J = - 1.013E5*(1671.0E-6 - 1.0E-6); result+=W.ToString()+"\r\n"; L.Energy U = new L.Energy(); U.VariableQ = true; L.Mass m = new L.Mass(); m.kg = 1.0E-3; L.LatentHeat lh = new L.LatentHeat(); lh.JPERkg = 2.26E6; L.Heat Q = new L.Heat(m,lh); L.FundamentalLaw.ThermodynamicsFirstLaw(Q,W,U); result+=U.ToString()+"\r\n"; } } } //-169.171 +/- 0 (J) //2090.829 +/- 0 (J)