The figure below is a top view of a rectangular thin wire loop that moves with velocity v0 on a horizontal table. The friction against the table is negligible so that this motion would continue practically with the same velocity if not for crossing the boundary of the region of the uniform magnetic field B=1908 G, also shown in the figure. From our discussions in class, you know that this crossing is accompanied by the slowing down of the loop motion facilitated by the phenomenon of induction. In fact, while crossing the boundary, the loop's velocity v(t) would be changing with time 1' according to the equation ab 1 dt 1 just as if the loop were experiencing the friction force with some effective parameter r. The geometrical dimensions of the loop are given: a=4.6 cm, b=10.5 cm, as well as its total resistance R=0.492 Q and mass m=9 g. I >