csywcck4in csywcck4in 30-09-2020 Physics contestada An open system starts with 20,000 J of mechanical energy. The energy changes to 18,000 J of mechanical energy and 2,058 J of thermal energy. What is the final total energy of the system? A 22,058 J B 20,058 J C 17,842 J D 4,058 J