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Express 16 mg mass into equivalent energ...

Express 16 mg mass into equivalent energy in eV.

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Here `m=16 mg=16xx10^(-6)`kg
`:.E=mc^(2)=16xx10^(-6)xx(3xx10^(8))J`
`=(16xx10^(-6)xx9xx10^(16))/(1.6xx10^(-19))`
`=9xx10^(-30)` eV
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