50 joules of energy are transferred out of a system. The energy is lost through heat, mechanical, and electrical energy took up 15 j and electrical energy took up 10 j, how many joules were lost through heat energy?
Not sure I understood correctly but since 15 are taken up by mechanical energy and 10 are taken in by electrical, 50-10-15 would result in 25 joules which must belong to heat energy
