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Problem 24.48- Enhanced with Video Tutor Solution A device called a railgun uses the magnetic force on currents to launch projectiles at very high speeds. An idealized model of a railgun is illustrated in (Figure 1). A 1.2 V power supply is connected to two conducting rails A segment of copper wire, in a region of uniform magnetic field, slides freely on the rails The wire has a 0.73 m2 resistance and a mass of 7.0 g Ignore the resistance of the rails. At some moment, the power supply is switched on For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution Figure 1 of 1 > xax 1.2 V x X 15 cm x X X X X X x x x x x x X X x X B=0.80 T What is the magnitude of the force on the wire? Express your answer with the appropriate units. HA x.10% 43 F 4.4.10 Submit Units Request Answer ▾ Part D What will be the wire's speed after it has slid a distance of 1.0 mm? Express your answer with the appropriate units. HA ? Value Units Submit ? Request Answer