Some bacteria are propelled through biological motors which spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity consists of a radius of 1.51 x 10-8 m, and a tangential speed at the rim of 2.14 x 10-5 m/s.
(i) Determine the angular speed (the magnitude of angular velocity) of the bacterial motor?
(ii) Determine how long does it take the motor to make one revolution?