Acompact disc (cd) stores music in a coded pattern of tiny pits 10−7m deep. the pits are arranged in a track that spirals outward toward the rim of the disc; the inner and outer radii of this spiral are 25.0 mm and 58.0 mm, respectively. as the disc spins inside a cd player, the track is scanned at a constant linear speed of 1.25 m/s. (a) what is the angular speed of the cd when the innermost part of the track is scanned? the outermost part of the track? (b) the maximum playing time of a cd is 74.0 min. what would be the length of the track on such a maximum-duration cd if it were stretched out in a straight line? (c) what is the average angular acceleration of a maximum- duration cd during its 74.0-min playing time? take the direction of rotation of the disc to be positive.