An electric turntable $0\mathrm{.}740$ m

in diameter is rotating about a fixed axis with an initial angular velocity of $0\mathrm{.}220$ rev$/$s

$.$ The angular acceleration is $0\mathrm{.}910$ rev$/$s$2$

$.$ Compute the angular velocity after a time of $0\mathrm{.}207$ s

$.$Through how many revolutions has the blade turned in this time interval? What is the tangential speed of a point on the tip of the blade at time t

$=0\mathrm{.}207$ s What is the magnitude of the resultant acceleration of a point on the tip of the blade at time t

$=0\mathrm{.}207$ s

$?$