Uncertainty principle

  • Thread starter stickplot
  • Start date
  • #1
85
0

Homework Statement



Using the uncertainty principle find the energy required for the electron to be confined inside the hydrogen atom. Use the radius of the atom 1 x 10^-10 m for Δr. Express your answer in eV, rounded up to the nearest hundredth.

Homework Equations



Δx(Δp)[tex]\geq[/tex]h/4pie
x= position in space
p= momentum (mass)(velocity)

The Attempt at a Solution



ok im not sure how Δr (radius) goes into the uncertainty principle, i know how it works and how it shows that it can not be exactly precise but i just dont understant how Δr would fall in the equation

is it just 1 x 10^-10 m[tex]\geq[/tex]4.14x10^-15 eV/12.56637061?
 

Answers and Replies

  • #2
28
0
delta_r is your delta_x.

The speed of the electron is not relativistic. (at least I don't remember it to be)
Use the momentum to get your kinetic energy.
Then convert units.
 
  • #3
85
0
o ok. and for the momentum. would i just use mass and velocity of an electron?
 

Related Threads on Uncertainty principle

  • Last Post
Replies
8
Views
690
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
6
Views
931
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
6
Views
771
Top