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An electromagnetic rail gun uses magnetic forces to launch projectiles. (Figure 1) shows a 10-cm-long, 12 g metal wire that can slide without friction along 1.0-m-long horizontal rails. The rails are connected to a 300 V source, and a 0.10 T magnetic field fills the space between the rails. Each rail has linear resistivity λ = 0.10 /m, which means that the resistance is A multiplied by the length of rail through which current flows. Assume that the sliding wire and the left end, where the voltage source is, have zero resistance. The wire is initially placed at x0 = 30 cm, then the switch is closed. Figure Part A X X X x 10 cm х X X × 0.10 T X X + X X 300 V × ✗ ✗ X X ✗ ☑ × × × x What is the wire's speed as it leaves the rails? 1 of 1

An electromagnetic rail gun uses magnetic forces to launch projectiles. (Figure 1) shows a 10-cm-long, 12 g metal wire that can slide without friction along 1.0-m-long horizontal rails. The rails are connected to a 300 V source, and a 0.10 T magnetic field fills the space between the rails. Each rail has linear resistivity λ = 0.10 /m, which means that the resistance is A multiplied by the length of rail through which current flows. Assume that the sliding wire and the left end, where the voltage source is, have zero resistance. The wire is initially placed at x0 = 30 cm, then the switch is closed. Figure Part A X X X x 10 cm х X X × 0.10 T X X + X X 300 V × ✗ ✗ X X ✗ ☑ × × × x What is the wire's speed as it leaves the rails? 1 of 1

Glencoe Physics: Principles and Problems, Student Edition
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter26: Electromagnetism
Section26.1: Interactions Of Electric And Manetic Fields And Matter
Problem 2PP
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An electromagnetic rail gun uses magnetic forces to launch projectiles. (Figure 1) shows a 10-cm-long, 12 g metal wire that can slide without friction along 1.0-m-long horizontal rails. The rails are connected to a 300 V source, and a 0.10 T magnetic field fills the space between the rails. Each rail has linear resistivity λ = 0.10 /m, which means that the resistance is A multiplied by the length of rail through which current flows. Assume that the sliding wire and the left end, where the voltage source is, have zero resistance. The wire is initially placed at x0 = 30 cm, then the switch is closed. Figure Part A X X X x 10 cm х X X × 0.10 T X X + X X 300 V × ✗ ✗ X X ✗ ☑ × × × x What is the wire's speed as it leaves the rails? 1 of 1
Transcribed Image Text:An electromagnetic rail gun uses magnetic forces to launch projectiles. (Figure 1) shows a 10-cm-long, 12 g metal wire that can slide without friction along 1.0-m-long horizontal rails. The rails are connected to a 300 V source, and a 0.10 T magnetic field fills the space between the rails. Each rail has linear resistivity λ = 0.10 /m, which means that the resistance is A multiplied by the length of rail through which current flows. Assume that the sliding wire and the left end, where the voltage source is, have zero resistance. The wire is initially placed at x0 = 30 cm, then the switch is closed. Figure Part A X X X x 10 cm х X X × 0.10 T X X + X X 300 V × ✗ ✗ X X ✗ ☑ × × × x What is the wire's speed as it leaves the rails? 1 of 1
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