An airplane propeller of total length L rotates around its center with angular speed '" in a magnetic field that is perpendicular to the plane of rotation Modeling the propeller as a thin, uniform bar, find the potential difference between
(a) The center and either end of the propeller and
(b) The two ends.
(c) If the field is the earth's field of 0.50 G and the propeller turns at 220rpm and is 2.0 m long, what is the potential difference between the middle and either end? It this large enough to be concerned about?