Electromagnetism Problem, electric charge per unit volume.

AI Thread Summary
The discussion revolves around calculating the average electric charge per unit volume in the atmosphere between 100m and 1000m, given the electric field strengths of 110 V/m and 25 V/m, respectively. The poster expresses confusion about how to approach the problem, particularly in determining the volume between the two heights and how to relate the electric field strength to charge density. They seek guidance on the correct method to calculate the electric charge per unit volume and express their need for assistance. The conversation highlights the challenge of applying theoretical concepts to practical problems in electromagnetism. Overall, the thread emphasizes the importance of understanding the relationship between electric fields and charge density in atmospheric physics.
Spoony
Messages
77
Reaction score
0

Homework Statement



The atmostspheric electric fields at heights of 100m and 1000m above the surface of the eartg are 110 v/m and 25 v/m respectively and are directed downwards. Evaluate the averge electric charge per unit volume in the atmostsphere between these heights. Express your result as the number of ions per unit volume assuming that each ion carries a charge of magnitude 1.6x10^-19

Homework Equations



Value of Epsilon nought

The Attempt at a Solution



I am a little clueless about this problem. I think i may need to calculate the volume of the hollowed sphere between the two values (ie the volume of the 1000m sphere minus the volume of the 100m sphere giving me the total volume inbetween). But this doesn't sound right to me. Then how do i calaculate the electric charge per unit vol. from the electric field strength? Help would be appreciated muchly, i think i only need a prod in the right direction. Thankyou
 
Physics news on Phys.org
No-one has no idea how to solve this problem? No idea at all?
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'A bead-mass oscillatory system problem'

Thread 'A bead-mass oscillatory system problem'

I can't figure out how to find the velocity of the particle at 37 degrees. Basically the bead moves with velocity towards right let's call it v1. The particle moves with some velocity v2. In frame of the bead, the particle is performing circular motion. So v of particle wrt bead would be perpendicular to the string. But how would I find the velocity of particle in ground frame? I tried using vectors to figure it out and the angle is coming out to be extremely long. One equation is by work...
View full post »

Similar threads

Understanding the electric force felt by the charges on a sphere
Replies
1
Views
1K
Potential and Electric Field near a Charged CD Disk
Replies
2
Views
2K
Charge Volume Density To Charge Per Unit Length
Replies
2
Views
10K
Electric Field of a Charged Sphere?
Replies
1
Views
2K
Energy per unit length of a cylindrical shell of charge
Replies
1
Views
5K
Kinetic and potential energy of a particle attracted by charged sphere
Replies
6
Views
2K
Calculating Work Done per Unit Charge in an Electric Field
Replies
9
Views
3K
Potential Energies of Two Charged Cylinders
Replies
1
Views
3K
Question on a Gauss's Law problem
Replies
1
Views
1K
Nonconducting spherical shell with uniform charge
Replies
14
Views
13K

Hot Threads

Recent Insights

Back
Top