Which electromagnetic wave has the greatest frequency

If the speed of a particle triples ,by what factor does its kinetic energy increase?

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

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.