Initial speed of proton between parallel plate=?

Click For Summary
SUMMARY

The discussion focuses on calculating the initial speed of a proton traveling through parallel plates with a specified electric field. Given the parameters of a 5.5 cm length, 0.3 cm distance between plates, and an electric field strength of 5.4 x 10^4 N/C, the problem can be approached using principles of projectile motion and uniform acceleration. The proton's trajectory is parabolic, indicating that its motion can be analyzed similarly to that of a projectile under gravitational influence. The key to solving this problem lies in determining the time it takes for the proton to traverse the vertical distance between the plates while being influenced by the electric field.

PREREQUISITES
  • Understanding of basic physics concepts, particularly projectile motion.
  • Familiarity with electric fields and forces acting on charged particles.
  • Knowledge of kinematic equations for uniformly accelerated motion.
  • Ability to apply Newton's second law in the context of electric forces.
NEXT STEPS
  • Calculate the time of flight for the proton using kinematic equations.
  • Determine the vertical displacement of the proton due to the electric field.
  • Apply the formula for electric force to find the acceleration of the proton.
  • Combine the results to solve for the initial speed of the proton.
USEFUL FOR

Students studying physics, particularly those focusing on electromagnetism and motion, as well as educators seeking to enhance their understanding of projectile motion in electric fields.

bored2death97
Messages
10
Reaction score
0

Homework Statement



So I just wrote my midterm in physics, and I was curious on how to do the last question.

Parallel plates, length 5.5cm,
Distance between them is 0.3 cm
Electric Field (E) is 5.4x10^4

Asking what is the initial speed of a proton going through the parallel plates if it just misses the top plate when it comes out.
Proton enters plates on bottom left, comes out top right, and the path is parabolic almost.
So Initial speed?

I think these were all the values we were given.

Homework Equations



The Attempt at a Solution



Wasn't sure where to start.
 
Last edited:
Physics news on Phys.org
I assume the proton starts parallel to the plates.
Isn't this just like a projectile under gravity? There's a uniform field across the path of the proton, so a uniform acceleration in that direction. How long will it take to 'fall' from one plate to the other?
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 58 ·
2
Replies
58
Views
6K
Replies
3
Views
9K
  • · Replies 6 ·
Replies
6
Views
14K
  • · Replies 26 ·
Replies
26
Views
6K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 9 ·
Replies
9
Views
8K
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 2 ·
Replies
2
Views
9K