## heisenberg, calculating kinetic energy

$\Delta p \Delta x\geq \frac{h}{4\pi }$

Katherine Wu 1H
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### heisenberg, calculating kinetic energy

Use the uncertainty in velocity (3.4x10^10 m/s) to calculate the electron's uncertainty in kinetic energy. Then calculate the uncertainty in kinetic energy per mole of electrons (that is, per mole of hydrogen atoms).

I'm not quite sure where to start. I tried plugging the velocity and mass of electron into KE=1/2mv, but that didn't work.

Chem_Mod
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### Re: heisenberg, calculating kinetic energy

Make sure that the velocity in your kinetic energy equation is squared.

Alex Hitti 3E
Posts: 51
Joined: Sat Aug 17, 2019 12:17 am

### Re: heisenberg, calculating kinetic energy

I think it isn't working because there is a small error in your formula.
The equation for kinetic energy: KE = (0.5)*mass*velocity^2.
Also, another equation you will need later on: ΔxΔp >= h/(4pi)

ValerieChavarin 4F
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Joined: Wed Sep 18, 2019 12:18 am

### Re: heisenberg, calculating kinetic energy

It could be due because your velocity is not squared.