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December 20, 2014

Homework Help: physics. Can you check my answer?

Posted by Jordan on Wednesday, February 11, 2009 at 8:04pm.

Two spherical objects are separated by a distance of 2.41 x 10-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of 4.18 x 10-21 N. How many electrons did it take to produce the charge on one of the objects?

This is the work that I did....

I first found that Q= 1.64 x 10 ^ -18.

I then divided by e.

The answer I got was 10.23, but I am being told that is wrong.

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