Mechanical energy swing because of the work done by the pendulum to oppose these non-conservative forces. That the loss of mechanical energy in a system always resulted in an increase of the system's temperature has been known for a long time, but it was the amateur physicist James Prescott Joule who first experimentally demonstrated how a certain amount of work done against friction resulted in a definite quantity of heat which should be conceived as the random motions of the particles that comprise matter. This equivalence between mechanical energy and heat is especially important when considering colliding objects. In an elastic collision,
Economy of Dalian There are the Dalian branches of China's five major banks: Bank of China, Industrial & Commercial Bank of China, China Construction Bank, Bank of Communications, and Agricultural Bank of China. Dalian Commercial Bank is now called Dalian Bank, which among other things handles processing of the Dalian Mingzhu IC Card for public transportation. Dalian Commodity Exchange is the only one of its kind in China, expanding the futures market beyond soybeans. A "Financial Street" around the new Commodity Exchange building is now being planned. Since the 1990s, Dalian City has emphasized the development of the IT industry, especially in Dalian