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KatieD
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Coulombs Law Problem -- Find the Force
Two small objects, A and B, are fixed in place and separated by 3 cm in vacuum. Object A has a charge of 2 uC and object B has a change of -2 uC. How many electrons must be removed from A and put onto B to make the electrostatic force that acts on each object an attractive force whose magnitude is 68 N?
We know an electrons charge is 1.60*10^-19 C
F=kq1q2/r^2 (coulombs law)
I tried to solve for q (the charge). Since they are both the same I took the square root. Then I divided by the charge of e-. I am out of ideas :(
I can do simple coulombs law problems in this chapter, but the harder ones like this stump me. :((Thanks,
Katie
Homework Statement
Two small objects, A and B, are fixed in place and separated by 3 cm in vacuum. Object A has a charge of 2 uC and object B has a change of -2 uC. How many electrons must be removed from A and put onto B to make the electrostatic force that acts on each object an attractive force whose magnitude is 68 N?
We know an electrons charge is 1.60*10^-19 C
Homework Equations
F=kq1q2/r^2 (coulombs law)
The Attempt at a Solution
I tried to solve for q (the charge). Since they are both the same I took the square root. Then I divided by the charge of e-. I am out of ideas :(
I can do simple coulombs law problems in this chapter, but the harder ones like this stump me. :((Thanks,
Katie