using System; using L=Science.Physics.GeneralPhysics; namespace Serway.Chapter44 { /// /// Example05: The Activity of Radium /// The half-life of the radioactive nucleus radium-226, 226Ra, /// is 1.6 \times 10^3 yr. /// (A) What is the decay constant \lambda of this nucleus? /// (B) If a sample contains 3.0 \times 10^{16} 226Ra nuclei /// at t = 0, determine its activity in curies at this time. /// (C) What is the activity after the sample /// is 2.0 \times 10^3 yr old? /// public class Example05 { public Example05() { } private string result; public string Result { get{return result;} } public void Compute() { L.Decay obj = new L.Decay(); obj.HalfLife = 1.6E3*365.0*24*60*60; //(A) result+=Convert.ToString(obj.DecayConstant); } } } //1.37372205685555E-11