Four Equidistant Particles in electric fields

[C6ZR1]

the thing is for the answer it says

Number: ____ N/C or V/m

and I cannot use vector letters, that's what is confusing me

 

[tiny-tim]

yes, the question asks for the magnitude of the total field, which is of course a scalar (not a vector) …

you get this by adding the individual fields as vectors, so that gives you the a total vector, and then you write down the magnitude of that vector

(in our example, the total vector was 3i+4j, and so the magnitude was 5)

 

[C6ZR1]

ohhhhhhhhhhhh ok. This makes sense now. lol Thanks for your time and help. Physics is starting to make more sense now