A group of students in 4th block measured the classroom door width. They got a measurement of 3.25 feet. The actual width is 3.40 feet. What is the % error?

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)

How would you reduce the volume of gas

Which three statements represent the benefits of performing experiments using computer simulations?