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9 July, 19:18

A proton is confined within an atomic nucleus of diameter 3.60 fm. part a estimate the smallest range of speeds you might find for a proton in the nucleus.

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  1. 9 July, 19:47
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    The answer for this problem would be:

    Assuming non-relativistic momentum, then you have:

    ΔxΔp = mΔxΔv = h / (4)

    Δv = h / (4πmΔx)

    m ~ 1.67e-27 h ~ 6.62e-34,Δx = 4e-15 - - >

    Δv ~ 6.62e-34 / (4π * 1.67e-27 * 4e-15) ~ 7,886,270 m/s ~ 7.89e6 m/s

    That's about 1% of the speed of light, the assumption that it's non-relativistic.
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