Which of the following is not true for atoms?
they are made up of elements.
they are the building blocks of matter.
they contain a nucleus.
they are made of protons, neutrons, and electrons.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

For which pair of objects would adding the same a

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