How fast can a man run in miles per hour?

What are similarities and differences of reflection, refraction, diffraction and absorption?

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o