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an electron is shot directly away from a...

an electron is shot directly away from a uniformly charged plastic sheet, at speed` v_(3) = 1.6 x 10^(5)`m/s. The sheet is nonconducting, flat, and very large. Figure 23-41b gives the electron's vertical velocity component v versus time t until the return to the launch point. What is the sheet's surface charge density?

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`23.01*10^-19C//m^(3)`
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