The initial speed of the electron is given as \(5 \times 10^3 \, \text{m/s}\). To double this speed, we simply multiply by 2.
\[ \text{Final speed} = 2 \times \text{Initial speed} = 2 \times 5 \times 10^3 \, \text{m/s} = 10 \times 10^3 \, \text{m/s} \]
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