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As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose you set up a measurement in which a proton and an electron are situated 893 nm from each other and you study the forces that the particles exert on each other. As expected, the predictions of Coulomb's law are well confirmed. You find that the forces are repulsive or attractive? and what is the magnitude of the force in terms of N?

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