When whitney heard a sudden noise behind her while she was walking to her car, she could feel her heart rate speed up. she suddenly focused on the noise and could feel her muscles tense up. she arrived at her car and quickly slid inside. what is she experiencing

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). light from a hydrogen lamp illuminates a diffraction grating with 520lines/mm , and the light is observed on a screen 1.5m behind the grating. part a what is the distance between the first-order red and blue fringes? express your answer to two significant figures and include the appropriate units.

The radius of an atom is closest in size to a

The photo shows sugar dissolved into a solution with excess sugar at the bottom of the jar this type of solution is classified as a. unsaturated b. compound c. saturated d. plasma