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The measurement of the electron position...

The measurement of the electron position is associated with an uncertainty in momentum, which is equal to `1 xx 10^-18 g cm s^-1`. The uncertainty in electron velocity is __________.
(mass of an electron is `9 xx 10^-28 g`)

A

`1 xx 10^5 cm s^-1`

B

`1 xx 10^11 cm s^-1`

C

`1 xx 10^9 cm s^-1`

D

`1 xx 10^6 cm s^-1`

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