Physics, Coulomb's Law, Question is Below

Question

A young man accumulates a charge q1 of +2.0 x 10-5 C while sliding out of the front seat of a car. His girlfriend, who had been waiting in the wind, has picked up some extra electrons and now has a charge q2 of -8.0 x 10-5 C. Draw a sketch of the situation. Estimate the magnitude of the electrical force that each person exerts on the other when separated by a distance of 6.0 m. Is the force attractive or repulsive?

Answer 1

Hi Jenson,

A young man accumulates a charge q1 of +2.0 x 10-5 C while sliding out of the front seat of a car. His girlfriend, who had been waiting in the wind, has picked up some extra electrons and now has a charge q2 of -8.0 x 10-5 C. Draw a sketch of the situation. Estimate the magnitude of the electrical force that each person exerts on the other when separated by a distance of 6.0 m. Is the force attractive or repulsive?

Force between two charges = K q1*q2 /d²

K = 9*10⁹

Force is attractive if charges are of opposite signs as in this question

F = (9*10⁹ ) 2.0 * 10 ^-5 * 8.0 *10 ^-5 / 6 ²

= 0.4 N Coulomb Force of Attraction each one exerts on other

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