Finding Neutral Points in a Charged System

In summary, the problem involves a line with a uniform linear charge density of +50.0*10^-6C/m and a flat plastic sheet with a uniform surface charge density of -100*10^-6C/m^2. The task is to find the location of points where an alpha particle would feel no force due to the arrangement of charged objects. This can be solved using knowledge of electric force, charge density, and electric flux. The student has covered electric flux for uniform and nonuniform electric fields, and is beginning to discuss Gauss's Law and Gaussian surfaces.
  • #1
jimbo71
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Homework Statement


A long line carrying a uniform linear charge density + 50.0*10^-6C/m runs parallel to and 10.0 cm from the surface of a large, flat plastic sheet that has a uniform surface charge density of - 100*10^-6C/m^2

Find the location of all points where an alpha particle would feel no force due to this arrangement of charged objects.
L= ? m from the line

Are they above the line or between the line and the sheet?


Homework Equations





The Attempt at a Solution


I have no idea where to start. please help
 
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  • #2
Do you know anything about electric force? And how charge density is related to the total charge?

Basically, what have you covered concerning electricity so far?
 
  • #3
electric flux for uniform electric field and nonuniform electric field. we are begging to discuss gauss's law and guassian surfaces
 
  • #4
i need help??!?
 

Related to Finding Neutral Points in a Charged System

1. What is uniform linear density?

Uniform linear density refers to the amount of mass per unit length of a stretched or elongated object. It is a measure of how evenly distributed the mass is along the length of the object.

2. How is uniform linear density calculated?

Uniform linear density is calculated by dividing the total mass of the object by its total length. The resulting value is expressed in units of mass per unit length, such as kg/m or g/cm.

3. What is the difference between uniform and non-uniform linear density?

Uniform linear density means that the mass is evenly distributed along the length of the object, while non-uniform linear density means that the mass is not evenly distributed. In other words, the mass per unit length may vary at different points along the object.

4. How is uniform linear density used in physics?

Uniform linear density is used in physics to calculate the tension and motion of objects, such as strings, ropes, and cables. It is also used in the study of standing waves and sound waves.

5. Can uniform linear density change?

Yes, uniform linear density can change if the mass or length of the object changes. For example, if you cut a rope in half, the uniform linear density of each half will be half of the original value. Additionally, if the mass is added or removed from the object, the uniform linear density will change accordingly.

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