Dan confirms the authenticity of an amethyst stone by a few tests. during one of the tests, he finds the angle of the refracted ray of light coming out of the amethyst into the air as 28°. if the refractive index of amethyst is 1.55, what is the incident angle?

Connie has $660,000 she wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these way is distributing her money between three banks will guarantee that all of her money is insured ?

Which two particles are found in the center of an atom

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.