Learning Goal: Rotational Kinematics An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.280 rev / s . The magnitude of the angular acceleration is 0.887 rev/ s? . Both the angular velocity and angular accleration are directed counterclockwise. The electric ceiling fan blades form a circle of diameter 0.710 m . V Part A V Compute the fan's angular velocity magnitude after time t = 0.209 s has passed. Keep 3 digits after the decimal point, in revolutions per second rev/s. View Available Hint(s) 0.465 rev /s Submit Previous Answers CorrectV Part B V Through how many revolutions has the blade turned in the time interval t = 0.209 s in Part A? Express the number of revolutions numerically. Keep 4 or more digits after the decimal point if you enter a regular number. View Available Hint(s) 7.79x10-2 rev Submit Previous Answers Correctv Part C What is the tangential speed v; of a point on the tip of the blade at time = 0.209 s ? Express your answer numerically in meters per second. Keep 3 digits after the decimal point. P View Available Hint(s) . .- Submit Previous Answers X Incorrect; Try Again; 4 attempts remaining v v Part D Calculate the magnitude a; of the tangential acceleration of a point on the tip of the blade at time = 0.209 s . Express the acceleration numerically in meters per second squared. Keep 2 digits after the decimal point. P View Available Hint(s) 6001? a; = m/s Part E Calculate the magnitude a, of the radial (or centripetal) acceleration of the point at the end of the fan blade. Keep 2 digits after the decimal point. in m/s2 P View Available Hint(s) TRENY 6 A O =1 ? ar = m/s