Which two statements are true about the wave shown?

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Aball horizontally thrown from a cliff at 8m/s

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2