- #1

dangsy

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## Homework Statement

The position and momentum of a 1KeV electron are simultaneously determined. If its position is located to within 1Angstrom (Δx), what is the PERCENTAGE of uncertainty in its momentum?

## Homework Equations

ΔxΔp >= h(bar)/2

## The Attempt at a Solution

Δx = 1A = 1x10^-10m

Δp>= h(bar)/2Δx

Δp = 1.055x10^-34(kg/m^2)/s

-------------------------

2(1x10^-10m)

= 5.275x10^-25 kgm/s

how do I get the percentage of uncertainty?