The mass of an electron is 9.11 x 10^-31 kg. What is the uncertainty in the position of an electron moving at 2.00 x 10^6 m/a with an uncertainty of trianglev=0.01x10^6 m/s?

Answer 1

d = delta, p = momentum, dx = position, dv = velocity

dp*dx = or > h/4*pi and dp = m*dv
Use dp = m*dv = 9.11E-31 kg*1E4 = 9.11E-27
Then 9.11E-27*dx = 6.63E-31/4*3.14
solve for dx = uncertainty in position.