Top Posters
Since Sunday
e
5
e
4
4
d
4
o
3
p
3
t
3
3
m
3
p
3
m
3
f
3
Home Q & A Board Science-Related Homework Help Physics
New Topic  
mich625 mich625
wrote...
Go to Answer
Posts: 2
Rep: 0 0
10 years ago
The kinetic energy of a particle is equal to the energy of a photon. The particle moves at 4.3% of the speed of light. Find the ratio of the photon wavelength to the de Broglie wavelength of the particle. Take the speed to be non-relativistic.
Read 367 times
2 Replies
Replies
Answer accepted by topic starter
fisajedifisajedi
wrote...
#1
Posts: 4
Rep: 0 0
10 years ago
Sign in or Sign up in seconds to unlock everything for free
This verified answer contains over 160 words.
1

Related Topics

wrote...
#2
10 years ago
The energy of a photon is given by:  

  E = hf = h c / ?, =>? = h c / E = h c / (½ mv²)

 The De Broglie wavelength is given by:

  ?' = h / p = h / (mv),  

  The required ratio is:

  ? / ?' = [h c / (½ mv²)] / [h / mv] = c / 0.5v

 and with v = 0.043 c;

  ? / ?' = c / (0.5*0.043c) = 2/0.043 = 46.51
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  986 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 332
  
 273
  
 238