How does an atom change if all of its electrons are removed? the atom’s volume increases. the atom’s mass increases. the atom becomes positively charged. the atom becomes negatively charged.

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

Both independent and dependent clauses

If a star is moving toward earth, it is