A Newton’s Ring apparatus consists of a plano-convex glass lens that has a radius or curvature R=10.0 m and a diameter of 4.00 cm resting on a flat glass plate. The apparatus is illuminated from above by light from a sodium lamp that has a wavelength of 590 nm. How many bright fringes would you see in the reflected light?

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.