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kmikias
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Homework Statement
The electric field strength 8.05 cm from a very long charged wire is 1310 N/C. What is the electric field strength (in N/C) 30.0 cm from the wire?
Homework Equations
E=F/Q
E=KQ/R^2
The Attempt at a Solution
First I try to find the charge using E=KQ/R^2
1320=K(Q)/(8.05)^2
Q= 9.432 x 10^-6
second I used the charge to find the electric field.
E= k(9.432 x 10^-6)/30^2
E= 94.32 N/C
I didn't convert cm to m because it would cancel out at the end.
so I don't know why my answer is still wrong.Any help will be great.
thanks guys.