Indicate the number of h2 and n2 molecules needed to yield two molecules of nh3

What is impossible to do with a hypothesis

Newtons second law deals most cosely with

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?