Two syringes are filled with water. syringe a has a cross-sectional area of 2 cm². Carlos pushes the plunger down with a force of 10N. calculate the pressure in the syringe. (please show how you worked it out)

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