Asked by B. Ramez

a) The x-coordinate of an electron is measured with an uncertainty of 0.20 mm. What is the xcomponent
of the electron’s velocity, vx, if the minimum percentage uncertainty in a simultaneous
measurement of vx is 1.0%.
b) Repeat part (a) for a proton.
Answered by Mr.satiev
Answer Details
Δx = 0.200mm = 0.200*10-3m
the mass of electron is: m=9.1 × 10-31kg
Δpx = mΔvx = mvx*1.0% = mvx /100
since
Δx Δpx = Δxmvx /100
the Planck's constant h = 6.626*10-34m2kg/s
Answered by a
57.9
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