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Calculate the maximum energy that a beta...

Calculate the maximum energy that a `beta` particle can have in the following decay:
`._(8)O^(19) to ._(9)F^(19)+._(-1)e^(0)+barV`
Given, `m(._(8)O^(19))=19.003576u, m(._(9)F^(19))=18.998403u, m(._(-1)e^(0))=0.000549u`

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The correct Answer is:
`4.3MeV`
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