Chemical refrigerants are assigned an R number which is determined systematically according to molecular structure.Common refrigerants are frequently referred to as Freon (a registered trademark of DuPont).hemical refrigerants are assigned an R number which is determined systematically according to molecular structure.
Some Rube Goldberg machines. use a complicated series of actions to simply move an object from. one place to another. Any object that is moving, has what is called kinetic energy; giving. an object more speed means giving it more kinetic energy.
Even without a. collision objects can gain kinetic energy if they fall down or roll down. a ramp. The goal of a Rube Goldberg machine is to find creative. ways of making this type of energy transfer happen using a variety of. simple machines (see experiment) attached together in the form of a. complex machine.