2. Royce Gracie, a Brazilian Jiu-Jitsu practitioner who was the son of Hélio Gracie and grandson of Carlos Gracie, was the inaugural winner in 1993 of which famous mixed
martial arts competition that was created to identify the most effective martial art in a
contest with minimal rules and no weight classes?

f=ma newton's second law 7x8=56n

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it