What is the scientific method?
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a. an organized way to test scientific ideas
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b. a formula for analyzing scientific data
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c. a plan for forming a scientific hypothesis
d. a technique for testing a scientific theory

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)

Newtons second law deals most cosely with

How are isotopes of the same chemical element alike? how are they different?