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Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Give more examples of this type of heat transfer: