A rhinestone is made of flint glass with an index of refraction of 1.50. To make it more reflective, it is coated with a thin film of Si0 that has a refractive index of 2.00. Find the first two possible thicknesses of the SiO coating that provide strong reflection for 570 nm light at normal incidence.

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

What is the rate of change in a objects position?