
College Physics
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ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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#72 a. What is the electric potential at point A in Figure below?
b. What is the potential energy of a proton at point A?

Transcribed Image Text:10 nC
(+
4.0 cm
5.0 nC
-5.0 nC
2.0 cm
FIGURE P21.72
A
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