# mathematics

1. ### A mathematical doubt in the expression for the energy of a continuous Charge Distribution.

I'm studying Introduction to Electrodynamics by David J.Griffiths and here I'm gonna present his method of calculating the the energy stored (or work done in assembling) of continuous charge distribution. W = \frac{1}{2} \int \rho V~d\tau d\tau stands for volume element. By Gauss' Law...
2. ### Zeroth law and Mathematics

so i have a question. zeroth law of thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other. in mathematics its defined that if a=b and b=c then a=c. its same as the zeroth law. which was...
3. ### Physics and mathematics

Root[2A^2(1 Cos theta)]=root[4A^2 cos^2 theta /2] Could you please explain this.