EBK PHYSICS FOR SCIENTISTS AND ENGINEER
1st Edition
ISBN: 9780100546714
Author: Katz
Publisher: YUZU
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Chapter 2, Problem 38PQ
During a bungee jump, a student (i) initially moves downward with increasing speed and then (ii) moves downward with decreasing speed, (iii) reaches the turnaround point (that is, the low point of the motion), (iv) moves upward with increasing speed, and finally (v) moves upward with decreasing speed. For each situation (i) through (v), state the direction of the bungee jumper’s velocity and acceleration (that is, upward, downward, or zero). Note: (i), (ii), (iv), and (v) refer to intervals of motion, whereas (iii) refers to an instant.
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Problem 04.08 (17 points). Answer the following questions related to the figure below.
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R₂
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A Use Kirchhoff's laws to calculate the currents through each battery and resistor in
terms of R1, R2, E1, & E2.
B Given that all the resistances and EMFs have positive values, if E₁ > E2 and R₁ > R2,
which direction is the current flowing through E₁? Through R₂?
C If E1 E2 and R₁ > R2, which direction is the current flowing through E₁? Through
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A 105- and a 45.0-Q resistor are connected in parallel. When this combination is
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45.0-resistor is disconnected, the current from the battery drops to 0.0840 A.
Determine (a) the emf and (b) the internal resistance of the battery.
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Final circuit
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Chapter 2 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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