Posted by **Bobby** on Monday, April 6, 2009 at 9:32pm.

sorry! trying to get the drawing correct!

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)

(u= 10^-6)

disregard the '''. i used them to hold the empty spaces

d''''''''''''''' 2d

O<--->O<--------->O

Q'''' q''''''''' 2Q

a. 15

b. 23

c. zero

d. 7.5

e 38

i know coulomb's law but i don't know how to apply it to this problem

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