Oh I am really sorry.Now that i saw the expression i realized that expression for initial energy is wrong .
And please can you give me some hints to solve this problem.
Homework Statement
A solid metal spheres of radius a surrounded by a concentric thin metal shell of radius 2a. Initially botb are having charge Q each. When the two are connected by a conducting wire , then the amount of heat produced in process will be :
Homework Equations
Heat = E2 - E1...
1.e problem statement, all variables and given/known data
Two positrons and two protons are kept on the four corners of a square of side a. Positrons are kept at vertices A and C and protons are kept at B and D. let q denote the charge on both positron as well as the proton. So what is the...