A wheel released from rest is rotating with constant an$-$ gular acceleration of $2\mathrm{.}6$ rad$>$s$2.$ At $6\mathrm{.}0$ s after the release: $($a$)$ What is its angular speed? $($b$)$ Through what angle has the wheel turned? $($c$)$ How many revolutions has it completed? $($d$)$ What is the linear speed and what is the magnitude of the linear accel$-$ eration of a point $0\mathrm{.}30$ m from the axis of rotation?