Magnitude of electric field homework help

Physics
Tutor: None Selected Time limit: 1 Day

Jan 18th, 2016

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E = 2kq/r² 

41 = 2(9 * 10^9)q/(½ * 0.072)²

q=2.952 *10^-12

=3.0 *10^-12 (two significant figures)

 

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Jan 18th, 2016

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