A proton of charge 1.6 xx 10^(-19)C" and...

A proton of charge `1.6 xx 10^(-19)C" and mass "1.67 xx 10^(-27)kg` is accelerated from rest in air through a p.d. of 1000 volts. Calculate its final speed.

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The correct Answer is:

`4.37 xx 10^(5)m//s`

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