Force p is directed from point a(3,3,2) towards point b(7-3,12) and has a magnitude of 60n while force vector q- 60i+20j- 50k and force vector f- fi+fj+f. k. forces p. o and far concurrent. if the three forces are in equilibrium a) express force p in vector fonn (10 points) b) solve for force f (10 points) c) find the angle between forces f and p.

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