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.
Solar panels transform the energy from the light of the Sun into electricity. A roller coaster provides a good example of energy transformation. An example of potential energy is a ball at the top of a hill. Windmills harness the energy of the wind and convert it into mechanical energy and then to electrical energy.