Question:
Two particles have equal masses of $5.0 \mathrm{~g}$ each and opposite charges of $+4.0^{\times 10^{-5}} \mathrm{C}$ and $-4.0^{\times} 10^{-5} \mathrm{C}$. They are released from rest with separation of $1.0 \mathrm{~m}$ between them. Find the speeds of the particles when the separation is reduced to $50 \mathrm{~cm}$.
Solution:
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