Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter27: Capacitors And Batteries
Section: Chapter Questions
Problem 27PQ: Find the equivalent capacitance for the network shown in Figure P27.26 if C1 = 1.00 F, C2 = 2.00 F,...
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Question
Shown are the configuration of a gel electrophoresis experiment. Charged plates establish an electric field on a region of gel between the plates. A solution of DNA fragments, which acquire a negative charge in solution, is analyzed by using an electric field to drive the fragments through the gel. A drag force opposes the motion, causing the fragments to move at a constant speed. Larger fragments move more slowly, so the fragments separate by size to give a “fingerprint” of the sample.
The fragments move in the direction of _________ electric potential and __________ electric potential energy.
A. higher, higher
B. higher, lower
C. lower, higher
D. lower, lower
![FIGURE Q21.30
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Transcribed Image Text:FIGURE Q21.30
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ISBN:
9781133939146
Author:
Katz, Debora M.
Publisher:
Cengage Learning