Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
b
2
M
2
V
2
f
2
c
2
c
2
K
2
New Topic  
Chery Chery
wrote...
Posts: 3587
7 years ago
Radio astronomers often study the radiation emitted by a hydrogen atom from a transition between the two hyperfine levels associated with the ground state. This radiation has a wavelength of 21 cm. What is the energy difference between the hyperfine levels? (1 eV = 1.60 × 10-19 J)
A) 5.9 × 10-6 eV
B) 5.9 × 10-25 J
C) 1.7 × 10-24 J
D) 4.7 × 10-25 J
Textbook 
College Physics

College Physics


Edition: 1st
Authors:
Read 158 times
2 Replies
Replies
Answer verified by a subject expert
lyalllyall
wrote...
Top Poster
Posts: 626
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Chery Author
wrote...
7 years ago
I needed this so much, thanks
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  510 People Browsing
Related Images
  
 252
  
 911
  
 600
Your Opinion
Which country would you like to visit for its food?
Votes: 263