Problem 4: (17% of Assignment Value) Three protons are on three corners of a square of side d = 5.4 × 10-6 m. What will be the magnitude of the net force on an electron put on the fourth corner of the square? Give your answer in newtons. Useful Information: Charge of electron = -1.6 × 10-19 C Charge of proton = 1.6 × 10-19 C 1/(4πε₀) = 9 × 109 Nm² C-2 F = 1.7*10^(-14)
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The force between two charges is given by Coulomb's law: $$F = k \frac{|q_1 q_2|}{r^2}$$ where $k = \frac{1}{4\pi\epsilon_0} = 9 \times 10^9 Nm^2/C^2$, $q_1$ and $q_2$ are the charges, and $r$ is the distance between them. Show more…
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