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Physics Modern Physics Level: High School

Heisenberg’s Uncertainty Principle

An electron is located on a pinpoint having a diameter of 3 micro m . The mass of an electron is 9.10939 x 10” kg and the Planck’s constant is 6.62607 x 10 tilde 34 J*s . What is the minimum uncertainty in the speed of the electron ? Answer in units of m/s .