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7 November, 15:13

If 11,243 atoms of helium pass through a 3 square meter plate area every 1.2 hours, and if this flux is constant with time, compute the flux of helium in units of atoms per m2 per second. Answer Format: X. XX Unit: 1 / (m2 s)

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  1. 7 November, 16:28
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    0.87 atom/m^2. s

    Explanation:

    Flux of helium = number of atoms of helium/area*time

    Number of atoms of helium = 11,243

    Area = 3 m^2

    Time = 1.2 hours = 1.2*3600 = 4,320 s

    Flux of helium = 11,243/3*4,320 = 11,243/12,960 = 0.87 atom/m^2. s
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