assume a jumper runs horizontally off the top of El Capitan with speed 4.0 m/s and enjoys free fall until she's above the valley floor at 150m, at which time she opens her parachute. How long is the jumper in free fall?

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.

What happens to an isotope during radioactive decay?

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.