Mechanical energy nonconservative forces, like frictional forces, will be present, but often they are of negligible values and the mechanical energy's being constant can therefore be a useful approximation. In elastic collisions, the mechanical energy is conserved but in inelastic collisions, some mechanical energy is converted into heat. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule. Many devices are used to convert mechanical energy to or from other forms of energy, e.g. an electric motor converts electrical energy to mechanical energy, an electric generator converts mechanical energy into electrical energy and a
2015 Dalian Aerbin F.C. season to gain full control of the team, before officially changed the team name to Dalian Yifang F.C.() by the end of the season. 2015 Dalian Aerbin F.C. season The 2015 Dalian Aerbin F.C. season is the sixth season in the club's history, and the first season after relegation from the Chinese Super League. When they were relegated from the Super League, Aerbin sold many starting players trying to minimize their expenses. Aerbin signed Swedish manager Mikael Stahre before the season started. However, financial issue was still a tough problem for the team. As the performance was below expectation, another back