EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Textbook Question
Chapter 29, Problem 31P
(III) A short section of wire, of length a, is moving with velocity
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Suspending Suspending a wire with a current. A horizontal wire carries a current I1 = 80 A dc. A second parallel wire 20 cm below it (Fig. 28-7) must carry how much current I2 so that it doesn't fall due to gravity? The lower wire has a mass of 0.12 g per meter of length.
59 In Fig. 27-51, R₁ = 20.0 2, R₂ = 10.0 2, and the ideal bat-
tery has emf & = 120 V. What is the current at point a if we close
(a) only switch S₁, (b) only switches S₁ and S₂, and (c) all three
switches?
Figure 27-51 Problem 59.
a S₁
S₂
S3
18 R₁ R₁
R₁
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LwIw Im
R₁
R₂
R₂
79 SSM In Fig. 30-71, the battery is
ideal and & - 10 V, R = 5.0 N,
R2 = 10 0, and L = 5.0 H. Switch S
is closed at time t= 0. Just
afterwards, what are (a) i, (b) iz,
(c) the current is through the switch,
(d) the potential difference V2
across resistor 2, (e) the potential
difference V across the inductor,
and (f) the rate of change dildr? A
long time later, what are (g) i. (h) iz.
(i) is. (j) V2, (k) V1, and (1) dizldr?
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Figure 30-71 Problem 79.
Chapter 29 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 29 - Prob. 1QCh. 29 - What is the difference between magnetic flux and...Ch. 29 - Suppose you are holding a circular ring of wire...Ch. 29 - The use of higher-voltage lines in homessay, 600 V...Ch. 29 - (II) (a) If the resistance of the resistor in Fig....Ch. 29 - Prob. 30PCh. 29 - (III) A short section of wire, of length a, is...Ch. 29 - (I) Neon signs require 12 kV for their operation....Ch. 29 - Prob. 62GPCh. 29 - Show that the power loss in transmission lines,...
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