The moon has a diameter of 2,159 miles. what does this distance equal in kilometers? a: 3,454.4kmb: 143,042.7kmc: 2,274.1kmd: 12,761.5km

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

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

What is the relationship between the direction of motion of the balloon and the wind currents