What is the critical angle of a light beam passing drim a medium(n=2) to a medium (n=1.5)

it is a sad day for rain to fall. Ill answer your question later

Explanation:

the body's situation won't change the forces are equal opposit and on the same body

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.