**Practice Problem on Electrical Force for Point Charges**
Q1=+4 micro-C
o
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Q2=-9 micro-C o-------------------o Q3=+6 micro-C
|------- 4cm -------|

3 charges are arranged on an equilateral triangle as shown above.
What is the force on charge Q_{2}?
Give the x and y components, the magnitude, and the direction.
Specify the force to three significant places
and the angle to the nearest integer.
Use the convention that right is 0 degrees, up is 90 degrees,
left is 180 degrees, and down is 270 degrees.

ANSWER = ( F_{x} = 4.04e+2 N, F_{y} = 1.75e+2 N, |F| = 4.41e+2 N, angle = 23 degrees )