Asked by Anonymous

An electron has an uncertainty in its position of 611pm. What is the uncertainty in its velocity?
Answered by DrBob222
dX*dp = h/4*pi
dp is change momentum = m*v; therefore,
4*pi*dX*m*V = h
Substitute 4, pi, dx = 611E-12, m is mass electron in kg, h is Planck's Constant, solve for V
Answered by Anonymous
what is the mass of the electron?
Answered by DrBob222
Go to Google and type in mass electron. I think it is 9.08E-31 kg but you should confirm that.
Answered by Anonymous
9.5*10^4?
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