De Broglie wavelength question

  • Thread starter math_04
  • Start date
  • #1
22
0

Homework Statement



In one of the classes, a recent experiment showing the interference of C60 molecules using a double slit apparatus was discussed.

(a) If the average velocity of the C60 molecules is v= 200 m/s, calculate the De Broglie wavelength for a C60 molecule

Homework Equations



lamda = h / p

where p = mv

The Attempt at a Solution



so m = 12 x 60 / 1000 to convert into kilograms.

p = m x v = 144

lamda = 6.63 x 10^-34 J.s / 144 kg m/s= 4.604 x 10^-36 m

Now that does not seem right because you can hardly see a wavelength that small. Is something wrong with what I have done.

Thanks.
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
8
Calculation of mass of C60 is wrong.
It is 12X60 amu.
1 amu = ...kg ?
 

Related Threads on De Broglie wavelength question

  • Last Post
Replies
8
Views
5K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
13
Views
6K
  • Last Post
Replies
1
Views
11K
  • Last Post
Replies
3
Views
2K
Top