Which statement is an example of a scientific hypothesis? A.
What type of fertilizer is best for growing beans?

B.
Only half of the bean plants grew over six inches.

C.
How long is the life cycle of a bean plant?

D.
Bean plants will grow best in well-drained soil.

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)

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Write the overall equation for the reaction for lithium battery