Janelle wants to buy some strings of decorative lights for her home. She is trying to decide between two strings of lights that are wired differently. How should Janelle’s lights be wired, and why?

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

Why do atoms emit energy of only specific wavelengths

How can you measure the amplitude of a longitudinal wave?