Electromagnetism problem-ΣE on a point

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Homework Help Overview

The discussion revolves around an electromagnetism problem involving the calculation of the net electric field (ΣE) at a point due to electric charges, as well as determining the direction angle. Participants reference an attachment containing relevant information for the problem.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants express a lack of initial attempts due to insufficient guidance from a teacher. Some inquire about relevant formulas related to electric fields and forces between charges. Others mention a specific formula for calculating the electric field due to a point charge.

Discussion Status

The discussion is ongoing, with participants exploring foundational concepts related to electric fields and forces. Some guidance has been provided regarding the relevance of textbook resources and the need to understand vector addition in the context of electric fields.

Contextual Notes

Participants note the absence of explicit instructions from the teacher and the reliance on textbook knowledge for relevant formulas. There is an emphasis on understanding basic concepts before proceeding with the problem.

cotsiospower
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Homework Statement


Hi. I need help with the problem attached. I need to find the ΣE of the point and the direction angle... All information needed are on the attachment...


2. Homework Equations [


The Attempt at a Solution


There is no attempt since the teacher said nothing relevant... :(
 

Attachments

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cotsiospower said:

Homework Statement


Hi. I need help with the problem attached. I need to find the ΣE of the point and the direction angle... All information needed are on the attachment...


2. Homework Equations [


The Attempt at a Solution


There is no attempt since the teacher said nothing relevant... :(


If the teacher hasn't stated anything relevant, then there's always the textbook :smile:

What formulas have you learned regarding electric charges?
 
the only thin i found is: E=(k*|q|)/r*r
where k=9*10^9
Any idea?
 
cotsiospower said:
the only thin i found is: E=(k*|q|)/r*r
where k=9*10^9
Any idea?

That is an expression that gives you the magnitude of the electric field due to a point charge (q) at some distance r. It's useful, and is almost right for what you need here.

A closely related expression gives the force that acts between two charges separated by distance r. Multiply the field that the above expression gives you by a second charge, say Q, and you get the force that each charge exerts on the other.

At this point I would suggest that you check your text or even investigate on the web the concept of "the force between electric charges". You will also need to learn about force vectors and the addition of vectors. These are some basic concepts there that you will need in order to solve this problem.
 

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