A device called a railgun uses the magnetic force on currents tolaunch projectiles at very high speeds. An idealized model of arailgun is illustrated in (Figure 1). A 1.2 V power supply isconnected to two conducting rails. A segment of copper wire, in aregion of uniform magnetic field, slides freely on the rails. Thewire has a 0.61 m? resistance and a mass of 9.0 g. Ignore theresistance of the rails. At some moment, the power supply isswitched on.What will be the wire's speed after it has slid adistance of 1.0 mm?

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1.2 V X X X 15 cm x X X xax x X X X X X X X X X X xx X X B = 0.80 T 1.2 V X X X 15 cm x X X xax x X X X X X X X X X X xx X X B = 0.80 T

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The current is I VR 12 V078 x 103 153846 A b right c ... View the full answer