The graph represents the gravitational attraction between two equal masses vs. their distance apart, which statement best describes the information presented by the graph?
a)distance is only a factor in space, not on earth.
b)gravitational attraction is directly proportional to distance. c)gravitational attraction is inversely proportional to distance. d)gravitational attraction is not related to the distance between objects.

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

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db