Three point charges, two positive and one negative, each having a ...

[bucstennis@aim.com]

Three point charges, two positive and one negative, each having a magnitude of 20 mC are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrostatic force on one of the positive charges?
 a. 69 N
  b. 40 N
  c. 80 N
  d. 57 N
  e. 20 N

Question 2

Three point charges, two positive and one negative, each having a magnitude of 20 mC are placed at the vertices of an equilateral triangle (30 cm on a side). What is the magnitude of the electrostatic force on the negative charge?
 a. 80 N
  b. 40 N
  c. 69 N
  d. 57 N
  e. 75 N

[blakcmamba]

Answer to Question 1

B

Answer to Question 2

C

[bucstennis@aim.com]

Thank you!

[blakcmamba]

Always glad to help...