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6 October, 09:19

An electron is ejected at a speed of 1.7*10^6 m/s from the electron gun of a computer monitor. If the viewing screen is 32 cm from the end of the gun, how far will the electron travel in the vertical direction before hitting the screen?

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  1. 6 October, 09:25
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    Using the equation

    S = vt

    time taken to reach screen = s/v

    t = 0.32/1.7 * 10^6

    t = 1.882 * 10^-7 sec

    Distance fallen due to gravity in this time will be;

    S = 0.5 gt²

    = 0.5 * 9.91 * (1.882 * 10^-7) ²

    = 9.325 * 10^-14 m
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