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Homework Statement
Two charges, one at the origin and one at x=1.6 m produce a field 1.59x10^3N/C at x = 9.11 m. The charge at the origin has a charge of 1.11 x 10^-5 C. How much charge does the second charge have?
http://books.google.com/books?id=vN...the origin has a magnitude of 845 N/C&f=false
Page 96 Question 3.49
Homework Equations
E=F/q
E=kq1q2/r^2
k=8.99x10^9
The Attempt at a Solution
I tried using coulomb's law to find Q2
1590=(9x10^9)(1.11x10^-5)(q2)/(9.11^2)
But my solution did not match the answer which was q2 = 2.44x10^-6C