Question 19 of 25 Which change to an object would double its potential energy? A Reducing ite mase to one hall of its original value B. Increasing ito heignt to twice its original value C. Increasing its maes to four times its original value O D. Reducing its height to one half of its original value

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