What Is the Resultant Direction of the Electric Field at Rho?

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Homework Help Overview

The discussion revolves around determining the direction of the electric field at a specific point, referred to as Rho, in a scenario involving two point charges. The subject area is electric fields and vector addition in physics.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants explore the addition of electric field vectors from two charges, questioning the resultant direction based on their orientations. There is a focus on whether the resultant vector could point southeast and the reasoning behind this assumption.

Discussion Status

The discussion is ongoing, with participants providing feedback on the original poster's reasoning and encouraging further explanation of their thought process. There is an emphasis on clarifying vector directions and the need for better visual representation of the vectors involved.

Contextual Notes

Participants mention the importance of using components for clarity in vector addition and suggest that a more accurate diagram could aid in understanding the problem. There is an acknowledgment of the need for equations to support claims about vector directions.

bryanwalsh
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Homework Statement


Find the direction of E at rho where is the electric field

http://i.imgur.com/37ohyME.jpg


Homework Equations



F=KQq/r^2


The Attempt at a Solution



I thought I might just have a vector pointing right from the +2Q and another pointing up from the +3Q and just add those two vectors together but I'm not sure.
 
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hi bryanwalsh! welcome to pf! :smile:

(try using the X2 button just above the Reply box :wink:)
bryanwalsh said:
I thought I might just have a vector pointing right from the +2Q and another pointing up from the +3Q and just add those two vectors together but I'm not sure.

that's correct … electric fields are vectors, so they add like vectors :smile:
 
So which way would the direction vector face? Southeast?
 
tiny-tim said:
hi bryanwalsh! welcome to pf! :smile:

(try using the X2 button just above the Reply box :wink:)


that's correct … electric fields are vectors, so they add like vectors :smile:


So which way would the direction vector of the electric field face? Southeast?
 
maybe yes and maybe no :wink:

tell us why you think it's southeast (with equations), and then we'll comment :smile:
 
tiny-tim said:
maybe yes and maybe no :wink:

tell us why you think it's southeast (with equations), and then we'll comment :smile:

Gysk3Ri.png
 
(just got up :zzz:)

if one vector is up, and the other is horizontal, how can the resultant be down?? :redface:

you need to draw a much better diagram, with arrows to show which way the vectors are going

or, preferably, use components
 

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