Question

In parts (1) and (2), calculate the minimum uncertainty in the momentum for the objects described. Refer to Heisenberg's Uncertainty Principle in your textbook.

A child runs through a door having a width of 0.79 m.

*Δp _{child}* =

A proton passes through a slit that has a width of 7 x
10^{-10} m.

*Δp _{proton}* =

A car of mass 1170 kg travels at 20 m/s (45 mph). Assume that the velocity measurement is known to within 1 % on either side of this value. What are the maximum value, the minimim value, and the uncertainty of the car's momentum?

*p _{car,max}* =

*p _{car,min}* =

*Δp _{car}* =

Calculate the minimum uncertainty in the *position* of
the car.

*Δx _{car}* =

Answer #1

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