Magnitude of the electric force?

[danish1991]

Need help calculating a problem, the questions states that. "Three charges are located at the corners of an equilaterial triangle. What is the magnitude of the electrical force on q1? I am really confused with this problem, i been trying to solve this problem and still had no luck ANY HELP WILL BE REALLY APPRECIATED!
q1=+2.0uc
q2=+2.0uc
q3=+2.0uc
distance between each 20cm
Its shaped as an triangle q1 being on top and q2 and q3 being on the corners.
q1=+2.0uc
/\
/ \
/ \
20cm / \20cm
/ \
/ \
q2=+2.0uc /_______ \q3=+2.0uc
20cm

 

[iRaid]

Well start with the equation:
F=\frac{kq_{1}q_{2}}{r^{2}}
for each of the particles. Add up the vectors in the x and y directions.

 

[danish1991]

How would you determine the number of vectors? Sorry but I am really bad at physics

 

[tiny-tim]

Add up the vectors in the x and y directions.

sorry, iRaid, but that's really not clear

How would you determine the number of vectors? Sorry but I am really bad at physics

there's only two vectors, one from each of the other two charges

you need to find the magnitude and direction of those vectors, and then add them as vectors

do you know how to add vectors?​