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Hello, for problem 16 .5, we are asked to find the magnitude of force between two charges.
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We know that charge 1 is equal to 25 microculems, and charge 2 is equal to 3 milliculomes.
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Both of these are positive.
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In addition, we know that these two charges are 35 centimeters apart.
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To find the magnitude of the force, we can use that using kulom's law.
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Of k, which is the coulum's constant, times the charge of particle 1 times charge of 2 divided by the distance separated squared.
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If we look carefully, we notice that the units on coulum's constant are newton meters squared over coulum squared.
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So, to make everything work out within this problem, we need to make sure that all units are the same...