four identical charges (q = +3µC) are arranged in a form of a rectangle. what is are the magnitude and direction of the net electric force on the charge in the lower right corner attributable to the other three charges? distances are in meters.

Question

anonymous · Answer

q1------.25--------q2
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0.15                           .15
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q3-----.25--------q4

anonymous · Answer

kris, you will need to use the electric force equation
$$Fe = k _{c}q _{1}q _{2}/r ^{2}$$
three times to first calculate the three individual electric forces acting on q3.

$$k _{c}$$
is Coulomb's constant = 8.99 x 10^9 N*m^2/C^2
Once you have found the forces q1q3, q2q3, and q4q3 you need to add the vectors to find the net force.

That should get you started. Let me know if you need additional assistance.