one type of sunburn occurs on exposure to uv light of wavelength in the vicinity of 325 nm.
how many photons are in a 1.00 millijoule burst of this radiation?

Idon’t understand 8. plz ! we are finding the area of polygons. thx in advance!

Why is the road most slick when it first begins to rain? a. oils the road has absorbed begin to float. b. the water has not had time to run off. c. a higher concentration of dirt makes the road more slick. d. none of the above

What is an effective way to have children experience classic art? a. schedule a field trip to a museum. b. have children find art on their own. c. make sure that the children know all of the art vocabulary. d. ask children to copy a classic piece.