Homework Help: physics

Posted by Jack on Monday, April 11, 2011 at 9:04pm.

Two charges are located along the x-axis. One
has a charge of 6.2 µC, and the second has a
charge of −3.1 µC.
The Coulomb constant is ke =
8.98755 × 10
9
N m2
/C
2
The acceleration of .
gravity is 9.81 m/s
2
.
If the electrical potential energy associated
with the pair of charges is −3.5×10
−2
J, what
is the distance between the charges?
Answer in units of m

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