Physic

5:51PM Sun Aug 10 coe \") 57% GE) [= Maxwell%2C+Relativity%2C+and+Waves.pdf ~ OpeninBooks () Q E% Done Physics 009 In-Lecture Worksheet #10 Hlousek Phys-009 Lecture X Relativity Maxwell's 1. Consider a metal bar moving through a uniform magnetic field, as shown below. (Assume that there is no electric field in this diagram's implied reference frame.) B 8 Observers in all reference frames will agree (perhaps by tracking individual elec- trons) that the bar's left side becomes negatively charged and its right side becomes positively charged, meaning that just after the bar begins to move (but before the charges have time to pile up at the ends) some leftward electromagnetic force must have been acting on the bar's electrons. What type of force is this i. In the implied reference frame of the diagram above? ii. in the rest frame of the bar? a) The force is purely electric. b) The force is purely magnetic. c) The force is both electric and magnetic. d) There is no force on the bar's electrons in this frame