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## GR0877 Problem 71

PROBLEM STATEMENT: This problem is still being typed.

SOLUTION: (B) According to Newton’s second law: $mv^2/R = qvB$ or $v \propto R$. Thus, $\displaystyle \frac{v_1}{v_2} = \frac{r_1}{r_2} = \frac{1}{3}$.

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