Three +3.0-C point charges are at the three corners of a square ...

[mmm]

Three +3.0-C point charges are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0-C charge. Find the magnitude of the electric field at the center of the square. (k = 1/40 = 8.99  109 N  m2/C2)
 
  What will be an ideal response?

Question 2

The two strongest forces that protons in a nucleus exert on each other are
 
  A) the weak nuclear and electromagnetic forces.
  B) the weak nuclear and the gravitational forces.
  C) the electrostatic and the gravitational forces.
  D) the strong nuclear and the electrostatic forces.

[joshraies]

Answer to Question 1

4.3  105 N/C

Answer to Question 2

D

[mmm]

YES! Correct, THANKS for helping me on my review

[tanna.moeller]

Thanks for the timely response, appreciate it