Calculate 1st 3 Energy Levels for Electron in Quantum Well

[ryukyu]

Homework Statement

Calculate the first three energy leveles for an electron in a quantum well of width 10Angstrom
and infinite walls.

Homework Equations

E_n=\frac{n²pi²(hbar)²}{2mL²}

The Attempt at a Solution

m=9.109E-31Kg
L=10E-10m
hbar=1.055E-34
En=n²*6.032E-20

My problem is really with the unit though.

here is what I have

\frac{Kgm²}{s}*\frac{Kgm²}{s}*\frac{1}{Kg}*\frac{1}{m²}=\frac{Kgm²}{s²}

 

[vela]

In TeX, you don't use the sup tags. To get a superscript, use ^, e.g. n^2 for n².

What's the specific problem you have with the units? A kg m²/s² is a Joule.