Proton and an electric field?

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

Homework Statement



A proton moving to the right along the x-axis at 3.8*10^5m/s, enters a region where the electric field of intensity 5.6*10^4n/c points to the left. How far will the proton move before its speed reaches zero? Describe the subsequent motion in deatail/


Homework Equations



dont know whethere to about doing this with force of energy so I really dont know.


The Attempt at a Solution



Im not really sure how to start this, some helpful hints would be appretiated. Thanks.
 

Answers and Replies

  • #2
mjsd
Homework Helper
726
3

Homework Equations



dont know whethere to about doing this with force of energy so I really dont know.

try [tex]\vec F= \vec E q[/tex]

E is electric field vector
q is the charge feeling the force
 
  • #3
22
0
Ok but if I work out this force easily enough how is this going to tell me what then time is when its speed gets to zero?
 
  • #4
mjsd
Homework Helper
726
3
F=ma, once you know a, and if it is constant then that's just kinematic in 1D....
 
  • #5
22
0
thanks
 
  • #6
22
0
Do you have any idea of what i would be expected to write in the "describe the motion" part?
 
  • #7
mjsd
Homework Helper
726
3
once you know how proton moves under the field, you are done I think....
 

Related Threads on Proton and an electric field?

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
8
Views
22K
Replies
6
Views
32K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
6
Views
5K
Replies
0
Views
8K
  • Last Post
Replies
1
Views
5K
Replies
2
Views
438
Replies
5
Views
5K
Replies
2
Views
7K
Top