A jeweler wants to authenticate if a stone brought in by a client is a real diamond. He shines a laser at the diamond with an incident angle of 42 3º. A table listing the indices of refraction in the Snell's Law Phet What should the angle of refraction be?

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.

What is an electric motor? explain its operation. 2-3 sentence