Where Will a Proton Move When Facing an Electric Field?

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Homework Help Overview

The problem involves a proton moving in an electric field, specifically analyzing its motion as it enters a region with an opposing electric field. The context includes concepts from electromagnetism and kinematics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relationship between force, electric field, and motion, questioning how to connect these concepts to determine the time until the proton's speed reaches zero. There is also uncertainty about how to describe the motion of the proton after it stops.

Discussion Status

Participants are exploring various approaches to the problem, including the use of force equations and kinematic principles. Some guidance has been offered regarding the application of force and acceleration, but there is no consensus on the specific steps to take next.

Contextual Notes

There is a noted lack of clarity regarding the initial steps to take in solving the problem, particularly in relation to the energy and force concepts involved. Participants are also considering the requirements for describing the motion in detail.

samblue
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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 don't know.


The Attempt at a Solution



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

Homework Equations



dont know whethere to about doing this with force of energy so I really don't know.

try \vec F= \vec E q

E is electric field vector
q is the charge feeling the force
 
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?
 
F=ma, once you know a, and if it is constant then that's just kinematic in 1D...
 
thanks
 
Do you have any idea of what i would be expected to write in the "describe the motion" part?
 
once you know how proton moves under the field, you are done I think...
 

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