College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 24, Problem 48GP
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 P24.48. A 1.2V power supply is connected to two
a. What is the current?
b. What are the magnitude and direction of the force on the wire?
c. What will be the wire’s speed after it has slid a distance of 6.0 cm?
Figure P24.48
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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 VV 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 0.97 mΩmΩ resistance and a mass of 9.0 gg. Ignore the resistance of the rails. At some moment, the power supply is switched on.
What will be the wire's speed after it has slid a distance of 1.0 mm?
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 0.92 mΩ resistance and a mass of 4.4 g . Ignore the resistance of the rails. The power supply is switched on.
Part A: What is the current?
Express your answer with the appropriate units.
Part C: What is the magnitude of the force on the wire?
Express your answer with the appropriate units.
PArt D: What will be the wire's speed after it has slid a distance of 7.0 cm?
Express your answer with the appropriate units.
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 0.85 mΩ resistance and a mass of 4.4 g . Ignore the resistance of the rails. The power supply is switched on. What is the magnitude of the force on the wire? What will be the wire's speed after it has slid a distance of 8.0 cm ?
Chapter 24 Solutions
College Physics: A Strategic Approach (3rd Edition)
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