The half-life of cobalt-60 is 5.3 years. if you have a sample that contains 10.0 g of the isotope, how much will be left after 15.9 years? a. 2.5 g b. 5.0 g c. 1.25 g d. 0.625 g

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Which situation will produce the greatest change of momentum

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