Find the equilibrium position for a -5.0 nC charge.

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Homework Help Overview

The problem involves finding the equilibrium position for a -5.0 nC charge placed between two other charges, 2.9 nC and 5.8 nC, which are separated by a distance of 40.80 cm. The context is centered around electrostatics and the concept of equilibrium in electric fields.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the net force required for the -5.0 nC charge to be in equilibrium and the implications of the superposition principle in determining the net electric field. Some participants express uncertainty about the problem and seek assistance, while others emphasize the importance of showing work for constructive feedback.

Discussion Status

The discussion is ongoing, with hints provided regarding the conditions for equilibrium and the need for participants to demonstrate their understanding through their work. There is no explicit consensus, and multiple interpretations of the problem are being explored.

Contextual Notes

Some participants have expressed frustration over the lack of provided answers, indicating a desire for validation of their own attempts. There are references to studying textbook material for foundational concepts related to equilibrium.

Leo34005
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Homework Statement



A charge of 2.9 nC and a charge of 5.8 nC are separated by 40.80 cm. Find the equilibrium position for a -5.0 nC charge.

? cm from the 2.9 nC charge.

Homework Equations



ac9b5e097f2acd8cf7f979d7390ce98c.png


The Attempt at a Solution



F = 2.9/5.8NC/ 4(40.80)
 
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Hint (1): What must the net force acting on the -5nC charge be in order for it to be in equilibrium?

Hint (2): If a point charge q is placed at a point where the net electric field from all other charges is \textbf{E}, what is the force \textbf{F} on q?

Hint (3): What does the superposition principle tell you about finding the net electric field at any point in space due to two point charges?
 
Not sure, mind helping me here?
 
If you can't answer those 3 questions, you need to study your textbook. Start by looking up "equilibrium".
 
Can i please have an answer so i can check if my answer is wrong or right?
 
Leo34005 said:
Can i please have an answer so i can check if my answer is wrong or right?

No, but if you post your answer we can tell you whether it's right or wrong, and even better, if you show your work and explain your reasoning we can point out the source of any errors you are making.
 
Leo is now on a temporary vacation from the PF because of repeatedly refusing to show work in homework threads.
 

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