- #1

rocomath

- 1,755

- 1

I just have a general question. Coulomb's Law is ...

[tex]F=\frac{k\cdot |q_1||q_2|}{r^2}[/tex]

Ok, solving this question ...

Three point charges are arranged along the x-axis. Charge [tex]q_1=+3.00\mu C[/tex] is at the origin, and charge [tex]q_2=-5.00\mu C[/tex] is at [tex]0.200 m[/tex]. Charge [tex]q_3=-8.00\mu C[/tex]. Where is [tex]q_3[/tex] located if the net force on [tex]q_1[/tex] is [tex]7.00 N[/tex] in the -x direction?

In the set-up, why is that in order to solve for the correct answer. I ignore the absolute value?

http://www.cramster.com/Answer-Board/Image/cramster-equation-2007129327456333276766594025007716.gif

[tex]F=\frac{k\cdot |q_1||q_2|}{r^2}[/tex]

Ok, solving this question ...

Three point charges are arranged along the x-axis. Charge [tex]q_1=+3.00\mu C[/tex] is at the origin, and charge [tex]q_2=-5.00\mu C[/tex] is at [tex]0.200 m[/tex]. Charge [tex]q_3=-8.00\mu C[/tex]. Where is [tex]q_3[/tex] located if the net force on [tex]q_1[/tex] is [tex]7.00 N[/tex] in the -x direction?

In the set-up, why is that in order to solve for the correct answer. I ignore the absolute value?

http://www.cramster.com/Answer-Board/Image/cramster-equation-2007129327456333276766594025007716.gif

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