As an astronomy project, you propose to construct a telescope from several pairs of discarded eyeglasses. You select two lenses, lens 1 and lens 2, that have a refractive power respectively of 11.0 D and 2.28 D. Determine the following. (a) the lens that should be used for the objective.
(b) the amount by which you should separate the two lenses.
(c) the angular magnification of the telescope.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

explanation:

wheres the pic

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.