Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 21, Problem 90TE
How does the Second Law of
why only 10% of the energy at one level of the food chain
moves to the next level?
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Problem 04.08 (17 points). Answer the following questions related to the figure below.
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R₁
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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
R2?
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.
10
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Final circuit
Initial circuit
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Chapter 21 Solutions
Conceptual Integrated Science
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