Costume jewelry beads are made of glass with index of refraction 1.5. To make them more reflective, they are coated with a layer of material with index of refraction 1.9. What is the minimum coating thickness needed to ensure that light of wavelength 540 nm and perpendicular incidence will be reflected with maximum constructive interference

muscle endurance

explanation:

i can do 50 in a row ( but i get so tired after that)

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it