• Support PF! Buy your school textbooks, materials and every day products Here!

What is the separation of the protons from each other when they momentarily come to a

  • Thread starter ohheytai
  • Start date
  • #1
85
0
Two protons that are very far apart are hurled straight at each other, each with an initial kinetic energy of 0.15 MeV, where 1 mega electron volt is equal to 1x10^6 (1.6x10^-19) joules. What is the separation of the protons from each other when they momentarily come to a stop?

i got 4.58e-13 and it was wrong someone please help me i think i have no idea how to do this
 
Last edited:

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
251
hi ohheytai! :smile:

(you meant 1.6 10-19 J)

(try using the X2 tag just above the Reply box :wink:)

show us your full calculations, and then we'll see what went wrong, and we'll know how to help :smile:
 
  • #3
85
0


initial kinetic energy = 2 * 0.15 * 1106 (q) Joules.
q^2 / (4 pi eps0 dstop) = 2 * 0.15 * 1106 (q)
1 / (4 pi eps0 dstop) = 0.3 * 1106 / q
dstop = q / 0.3*1106*4*pi*eps0
yaaa as you can see im losttt
 
  • #4
tiny-tim
Science Advisor
Homework Helper
25,832
251
hi ohheytai! :smile:

(have a pi: π and an epsilon: ε :wink:)

i'm confused :confused:

what is 1106?

and can you please write it out more clearly? :smile:
 
  • #5
85
0


1x10^6 sorry
 
  • #6
85
0


i just redid it and got 4.58e-15 i think thats right is it?
 

Related Threads on What is the separation of the protons from each other when they momentarily come to a

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
7
Views
8K
Replies
21
Views
5K
Replies
2
Views
3K
Replies
5
Views
572
Top