University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Textbook Question
Chapter 25, Problem 25.50P
In an ionic solution, a current consists of Ca2+ ions (of charge +2e) and Cl− ions (of charge −e) traveling in opposite directions. If 5.11 × 1018 Cl− ions go from , A to B every 0.50 min.
while 3.24 × 1018 Ca2+ ions move from B to A, what is the current (in mA) through this solution, and in which direction (from A to B or from B to A) is it going?
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Suppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament in 5.00 s?
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Since a single electron has a charge of -1.60 x 10¬19 C, the number of electrons passing through the filament in t=5.00 sis:
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Suppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament
in 5.00 s? Express all numerical values in three significant figures.
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N =
x 1019 electrons
A silver wire 5 mm in diameter transfers a charge of 320-C in 70 minutes. Silver contains 5.8x1028 free electrons per cubic meter. Determine the drift velocity (um2/s) of the electrons in the wire.
Chapter 25 Solutions
University Physics (14th Edition)
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Ch. 25 - Temperature coefficients of resistivity are given...Ch. 25 - Which of the graphs in Fig. Q25.12 best...Ch. 25 - Why does an electric light bulb nearly always burn...Ch. 25 - A light bulb glows because it has resistance. The...Ch. 25 - (See Discussion Question Q25.14.) An ideal ammeter...Ch. 25 - (See Discussion Question Q25.14.) Will a light...Ch. 25 - The energy that can be extracted from a storage...Ch. 25 - Eight flashlight batteries in series have an cmf...Ch. 25 - Small aircraft often have 24-V electrical systems...Ch. 25 - Long-distance, electric-power, transmission lines...Ch. 25 - Ordinary household electric lines in North America...Ch. 25 - A fuse is a device designed to break a circuit,...Ch. 25 - High-voltage power supplies are sometimes designed...Ch. 25 - The text states that good thermal conductors are...Ch. 25 - Lightning Strikes. 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