Asample of silver (with work function φ = 4.52 ev) is exposed to an ultraviolet light source (λ= 200 nm), which results in the ejection of photoelectrons. what changes will be observed if:

How far is the region from the equator or control climate

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

What metric units would you use to measure the thickness of a key