Electric Force Between Two People

Points:$4$

Two people, who may be treated as point masses for this problem, have masses of $70kg$ and $105kg.$ They carry equal but opposite charges. The negative charge

is due to $3\mathrm{.}5{10}^{10}$ excess electrons. The individuals are ten $m$ apart. Assume that the people are mostly water for which $6\mathrm{.}02{10}^{23}$ molecules has a mass of $18g.$

$\text{'}$es of water are there in the more massive person?

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What is the maanitude of the gravitational force of attraction between the two people?

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What is the maanitude of the electrical force of attraction between these two people?

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What is the ratio of the magnitudes of the gravitational force to the electric force? $($Take note of the number of charges and the number of water molecules; the

result emphasizes the weakness of gravity.$)$

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