posted by Bobby .
PLEASE HELP!! I HAVE A TEST TOMORROW!!
i just posted this problem but a very important drawing was left out!
if Q=30 uC, q=5.0 uC, and d=30cm, what is the magnitude of the electrostatic force on q in N?
(Ke= 8.99 x 10^9 Nm^2/C^2)
(uC= micro coulombs)
Q q 2Q
i know coulomb's law but i don't know how to apply it to this problem