An electruc ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of $0\mathrm{.}200$ rev$/$s$.$ The magnitude of the angular acceleration is $0\mathrm{.}912$ rev$/$s$^2.$ Both the angular velociy an dangular accleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter $0\mathrm{.}780$m$.$

Part A: Compute the fan's angular velocity magnitude after time $0\mathrm{.}207$s has passed.

Part B: Throught how many revolutions has the blade tured into the time interval $0\mathrm{.}207$s form Part A$?$

Part C: What is the tangential speed vt of a point on the tip of the blade at time t$=0\mathrm{.}207$s$?$

Part D: Calculate the magnitude at of the tangential acceleration of a point on the tip of the blade at time t$=0\mathrm{.}207$s

Part E: Calculate the magnitude ar of the radial $($or centripetal$)$ acceleration of the point at the end of the fan blade.