A radionuclide with disintegration constant `lamda` is produced in a reactor at a constant rate `alpha` nuclei per second. During each decay energy `E_0` is released. 20% of this energy is utilized in increasing the temperature of water. Find the increase in temperature of m mass of water in time t. Specific heat of water is s. Assume that there is no loss of energy through water surface.

Answer

`0.2E_(0)([alphat-(alpha)/(lamda)(1-e^(-lamdat))])/(ms)`