Three types of media that sound can travel through are air liquid and solids, list two different media per category

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

c) up is the direction the magnetic force is acting on the charge.