Frequency. The sine wave generator has a precision of 0.1 Hertz (oscillations per second). The students choose the frequency that produces a four-segment wave with the highest amplitude. This choice is made by eye, limiting the precision of the measurement of the frequency to 0.3-0.4 Hertz. Referring to the graphs f2 vs M and to equation (F), explain how this uncertainty affected the measu

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