REFERENCES
1.
C.
E.
Mungan
,
“Electrostatic repulsion of charged pith balls hanging from
strings
,” Eur. J. Phys.
32
,
207
(2011
). The article is also available online at
http://www.usna.edu/Users/physics/mungan/Publications/EJP8.pdf or at the journal's
webpage.
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© 2011 American Association of Physics Teachers.
2011
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