The number of electrons in a copper penny is approximately 10*10^23. How large would the force be on an object if it carried this charge and were repelled by an equal charge one meter away?

I am using don't panic volume 2. How do you do this problem step by step?

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11 February, 07:36

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Roger Berg · Answer 1

The charge on the electron is 1.6x10^-19C. So, 10^24 of them will be a charge of 1.6x10^5C, F = q1xq2/[ (4pi epsilon nought) r^2]

The number of electrons in a copper penny is approximately 10*10^23. How large would the force be on an object if it carried this charge and were repelled by an equal charge one meter away?I am using don't panic volume 2. How do you do this problem step by step?