Quantum physics separate and simultaneous realities -
if the original or close to it version of a person is killed by a tractor trailer t-bone or the equivalent, do all the other versions/realities keep going? or is they all tractor trailer debris? ¿

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

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