Human tissue contains about 3·10 27 electronsper kg of material. Suppose two hum

Question

Human tissue contains about 3·1027 electronsper kg of material. Suppose two humans are located 600 km apart andeach has a mass of 75 kg. We now transfer 0.0003 % of the electronsfrom the male human to the female. What will be the magnitude ofthe resulting force in N?
Hint:
What will the net charge on each person be as a result of thetransfer of electrons? Use these net charges to calculate theCoulomb force.
Thanks a lot!!
Hint:
What will the net charge on each person be as a result of thetransfer of electrons? Use these net charges to calculate theCoulomb force.
Thanks a lot!!

Explanation / Answer

No.of electrons per kg N = 3 * 10 ^ 27 No.of elcetrons in human N ' = 75 N                                           = 225 * 10 ^ 27 distance r= 600 km = 600000 m Transfer of electrons N " = 0.0003 % of N '                                       = ( 0.0003 / 100 ) N '                                       = 3 * 10^ 21 electrons charge q = N " * e                =3 * 10 ^ 21 * 1.6 * 10 ^ -19 C = 480 C the magnitude of the resulting force F = Kq^ 2 / r ^2                                                         = ( 8.99* 10 ^ 9 ) ( 480 ) ^ 2 / (600000) ^ 2                                                          =5.7536 * 10^ 3 N

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