Explain. Why are rift zones common places for
igneous rock to form?

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles