When energy is transferred from one part of a system to another, some of the energy is lost during the transfer and cannot be used as it was intended. which two sentences describe examples of this?

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

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?

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?