Sound waves are longitudal waves meaning they go back and forth
What is he minumum coating of thickness needed to ensure that lifght of waveelntght 5660 mbnd si
<span>A lens is a piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope). A binoculars, an eye, and a camera all contains a lens. A mirror does not contain a lens.</span>
Gradpoint? The answer is B
