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In the figure below, an iron bar sitting on two parallel copper rails, connected to each other by a resistor, is pulled to the right at a
constant speed. The resistance R = 5.00 0, the distance between the rails is { = 1.20 m, and a uniform 3.10 T magnetic field is
directed into the page. At what speed (in m/s) should the bar be moved to produce a current of 0.500 A in the resistor?
Fapp
m/s

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