Julia rides her horse 12 miles in 45 minutes. what is her average speed in mi/min? show your work.

Asystematic approach to problem solving is called a (an)

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.