Which of the following reactions describes a beta emission?

(PLEASE HELP!!!)

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

What type of reaction fuels the processes seen here?

Why is retrograde motion an apparent motion