electric charge

two identical charges each of 15g mass and negligible volume are both suspended from the same point by a non conduction weightless strings 1500mm in length. Find the magnitude of each charge is the angle between the strings is 5.

The answer to this question according to the back of the book is 0.11x10^-6C.

Answers
Solution.pdf
Ryan A.
10 January 2017
The pdf has the solution to get the answer. If you would like to go through this question or any others feel free to contact me. Ryan 
Ryan A.
10 January 2017
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