Moving Proton in an Electric Field problem

[purduegirl]

Homework Statement

Moving Proton in an Electric Field
A proton with kinetic energy of 2.95 × 106 eV is fired perpendicular to the face of a large plate that has a uniform charge density of σ = +7.50 μC/m2. What is the magnitude of the force on the proton?

How much work must the electric field do on the proton to bring it to rest?

From what distance should the proton be fired so that it stops right at the surface of the plate?

The Attempt at a Solution

I really have no idea how to do this one. No one in my class can seem to figure this one out.

 

[G01]

The Attempt at a Solution

I really have no idea how to do this one. No one in my class can seem to figure this one out.

This isn't an excuse to not show any of your own thoughts on the problem. You may not be able to show any work, but you can still think about the problem qualitatively and post your thoughts. Remember your must show independent effort on the problem in order to get help here. You can start by answering some of these questions:

What concepts from class do you think apply to this problem?

Will the force between the proton and the sheet be attractive or repulsive?

Do you have any formulas for the force or the electric field of the sheet?

 

[Moetasim]

As a scientist, it is important to approach problems with a logical and systematic approach. In this case, we can use the given information and equations from electromagnetism to solve this problem. First, we need to calculate the electric field at the location of the proton using the given charge density. Then, we can use the formula for the force on a charged particle in an electric field to determine the magnitude of the force on the proton. Next, we can use the work-energy theorem to calculate the work done by the electric field on the proton to bring it to rest. Finally, we can use the equation for the distance traveled by a projectile to determine the distance at which the proton should be fired so that it stops right at the surface of the plate. By following this methodical approach, we can solve this problem and gain a better understanding of the concepts involved. It is also important to seek help from classmates, teachers, or other resources if needed, as collaboration and discussion can often lead to a better understanding of complex problems.