when an e- and a positron collide they're annihlated and their mass converts to engery. the energy released is? [1.64x10^-13 J]
Try E = mc^2
Take mass of electron and positron to be 9.1x10^-31Kg and 3x10^8m/s as speed of light.
Take mass of electron and positron to be 9.1x10^-31Kg and 3x10^8m/s as speed of light.