Proton Distance Help: Find After .5s

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Homework Help Overview

The problem involves a proton released from rest in a uniform electric field of 2.5e-8 N/C, with the goal of determining the distance traveled after 0.5 seconds. The context is rooted in electric fields and kinematics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the application of kinematic equations and question the use of gravitational acceleration in the context of an electric field. There is a mention of calculating acceleration from the electric force.

Discussion Status

Some guidance has been offered regarding the need to consider the electric field's effect on acceleration rather than gravitational acceleration. Participants are exploring the relationship between electric fields and motion, but no consensus has been reached on the correct approach.

Contextual Notes

There is an indication that participants may be uncertain about the relevance of gravitational effects in this scenario, as well as the application of concepts learned in class regarding electric fields.

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Homework Statement


A proton is released from rest at t=o in a uniform electric field whose magnitude is 2.5e-8 N/C. How far has the proton traveled after .5 s?


Homework Equations



x = volt + 1/2at^2

The Attempt at a Solution


x = 1/2(9.81)(.5)^2 = 1.2 but it says the answer is .3m. I'm prety sure I'm using the correct equation so I don't know what is wrong.
 
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matt72lsu said:

Homework Statement


A proton is released from rest at t=o in a uniform electric field whose magnitude is 2.5e-8 N/C. How far has the proton traveled after .5 s?


Homework Equations



x = volt + 1/2at^2

The Attempt at a Solution


x = 1/2(9.81)(.5)^2 = 1.2 but it says the answer is .3m. I'm prety sure I'm using the correct equation so I don't know what is wrong.

Fe = q*E = ma Solve for acceleration, a, first. Then do your kinematics. The proton is accelerating in an electric field, I am assuming you don't have to worry about g... Have you not been studying E fields in your class? Remember what you are studying in class and then apply to the "old" ways.
 


thanks!
 


matt72lsu said:
thanks!

happy day
 

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