SPH4U University Grade 12 Physics - Coulomb's Law?

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SUMMARY

The discussion centers on applying Coulomb's Law to calculate the magnitude of a third point charge, q₃, in a system with two known negative charges, q₁ = -5.00 μC and q₂ = -4.00 μC, arranged at the corners of a triangle with a side length of 0.500 m. The forces acting on q₃ are directed at +20.0° relative to the positive x-axis. To solve this problem, users must understand the vector nature of forces and how to apply Coulomb's Law effectively to determine the unknown charge.

PREREQUISITES
  • Coulomb's Law for electrostatic forces
  • Vector addition of forces
  • Basic trigonometry for angle calculations
  • Understanding of point charges and their interactions
NEXT STEPS
  • Review the principles of Coulomb's Law and its mathematical formulation
  • Study vector addition techniques in physics
  • Learn how to resolve forces into components using trigonometric functions
  • Explore examples of problems involving multiple point charges
USEFUL FOR

This discussion is beneficial for high school physics students, educators teaching electrostatics, and anyone seeking to understand the application of Coulomb's Law in calculating forces between point charges.

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Homework Statement



SPH4U University Grade 12 Physics - Coulomb's Law?
I have to determine the answer using Coulomb's Law. Please help me figure out how to do this !

Three point charges, q₁= -5.00 μC, q₂= -4.00 μC, and q₃ which is negative are arranged as shown on three corner of side a=0.500 m. The direction of the forces on qt is at +20.0° with respect to the + x axis.
Calculate the magnitude of q₃

Homework Equations



Coulomb's Law

The Attempt at a Solution



I don't even know how to start :confused:
 
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Can you attach a picture or describe how q1 and q2 are situated?
 

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