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Uncertainty In Electron Position

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German physicist Werner Heisenberg related the uncertainty of an object's position (deltax) to the uncertainty in its velocity deltav.

The mass of an electron is 9.11 x 10-31 kg.
What is the uncertainty in the position of an electron moving at 9.00 x 106 m/s with an uncertainty of
deltav x 0.01 x 106 m/s?

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https://brainmass.com/chemistry/modern-quantum-theory/uncertainty-in-electron-position-504049

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It shows how to calculate the uncertainty in the position of an electron given the uncertainty of its velocity.

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Uncertainty in the momentum of an electron and a proton

(a) Estimate the uncertainty in the momentum of an electron whose location is uncertain by a distance of 2 Angstrom. What is the uncertainty in the momentum of a proton under the same conditions?
(b) What can one conclude about the relative velocities and energies of the electron and proton in the last problem? Are wave phenomena apt to be more apparent for light particles than for heavy ones?

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