Joules = 21 megatons of TNT), as is usually witnessed in nuclear reactors and nuclear weapons. Conversely, the mass equal of an day-to-day amount of money energy is minuscule, Which explains why a loss of energy (lack of mass) from most devices is tricky to measure on a weighing scale, https://titusaytme.actoblog.com/22244022/pro-for-dummies