Electric charge Definition and 275 Threads

why does an accelerated electric charge produce energy?

1) For a particle of mass m and a charge of q moving in a circular path in a magnetic field B, show that its kinetic energy is proportional to r^2, the square of the radius of the curvature of the path. I started off with the definition of KE: (mv)^2/2 and the fact that a = v^2/r, where F =...

Do you think the total electric charge of Our Universe is zero?

if you have a device similar to a stun gun, with a spark continuously jumping across the 2 contact points. electric field has to rip electrons from the air moecules leaving positive ions - creating plasma. now imagine you have a negatively charged disc nearby the device which is covered in a...

Hi all, I am having trouble on where to start w/ this problem: Two equally charged particles, held 3.0 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 7.0 m/s2 and that of the second to be 10.0 m/s2. The mass of the first particle is...

I need a bit of help with two problems. I've just started using latex, so bear with me if the equations are a bit funky. The charges and coordinates of two charged particles held fized in the xy plane are q_1 = +3.0 * 10^(-6) C and (0.035, 0.005) and q_2 = -4.0 * 10^(-6) C and (-0.02...

If an moving electric charge produces light waves what is it is oscillating?

I'm using CAPA now for online homework and I seem to be having some trouble inputting an answer. Last semester I used webassign which I think is so much easier. Anyways, the first question was "Two small spheres with charges 7 and 6 coulombs are held 9 m apart. Find the magnitude of the force...

Hi everybody I'm wondering if it is possible to enclose a relatively high electric charge in a non-conducting recipent (say plastic or glass -- macroscopic : centimeters) ? Is it possible technically ? if so, what is the limit amount of charge we can enclose ? if so, would the recipient...

Does an electric charge "curve spacetime"? If theorists (starting with A. E.) can make a theory about spacetime curvature caused by mass (GR), couldn't there be a similar theory where some spacetime curvature is caused by electric charges? Both are F = k/r^2 in elementary physics. A...

I am confused by a question related to me about electric charge. How can you find the total electric charge of 1 kg of an electron or proton? I know the magnitudes of the charges are + - 1.60X10^-19 C. Would I use the, for example, the electron mass 9.11X 10^31 kg, take the 1 kg and divide by...

two identical, equally charged balls are suspended from strings 0.25 in length from a single point. The mass of the ball is 8e-4kg. The strings spread 36 degrees. The problem asks to find the charges. My question is what should the force be when moving the ball at 18 degrees?Is it F at full...

This is why electric charge is quantized. See the zip-file if this word-doc regards marlon

Hi, I'm seeking help with a couple of problems involving electrostatics. Q1)Calculate the electric field at the centre of a square 0.1m on a side if one corner is occupied by a charge 0.2micro C, and the other three corners are occupied by the charge of -0.9micro C Q2) A positive test...

When I use the following equation which assumes quarks are spheres of charge and compressing the spheres creates mass (by doing work): mass of quark = integral of ( k q ^2 / r^2 c^ 2 ) d r and input masses from the mass equation I arrived at by trial and error a few months ago Mass =...

could someone told me an experiment that ı can find the dimensions of the electric charge in therms of m, kg, sec the answer is kg^(1/2)*m^(3/2)/sn it can be found by assuming the epsilon zero is dimensionless please say me an experiment that i can check it :confused: :confused:

Two keys that will help anybody seeking TOE. 1. The key of complete understanding the concept of electric charge. 2. The key of complete understanding the concept of mass. The 1st key does have a lot of supporting direct evidence for its existence. The evidence for the second are mostly...

Anybody know why electric charge is attracted to the Earth (ground) ?

[?] I am working out of the Physics Fifth Edition by Giancoli, I am having trouble with Chapter 16, questions 19,29 and 49. I took Physics One about 6 years ago and can't seem to remeber the basics to figure these problems out. Can anyone help me? Thanks, Ron

A force of 6N acts on a charge of 3 microC when placed in a uniform electric field. what is the magnitude of the electric field? I have E = k(Q/r^2... k=9x10^9 * (Q,charge=3x10^-9) / (?)^2 ths can't be the right formula caus e wheres r^2? Dx [?]

Hello, I have some missed test questions that I still don't understand. Can anyone please explain these. 1) Two chrged objects atrract each other with a force F. What happens to the F between them if one is doubled, the other is tripled and the separation distance between their centers...

This one stumps me cuase not a lot of info. what is the charge on 1kg of protons? Thats it, i swear! no more info to give you guys so we can try to solve. Do you know how to help me, please? Thanks! Dx :wink:

Hiya! Whoa! vectors, i hate those stinkinh vectors! :wink: Anyways, I have theis problem and don't know how to solve for it. A piece of plastic has a net charge of +2.00 microC. How many more protons then eclectrons does this piece of plastic have? Now i know plastic is a insulator...

I may edit this post considerably so if it interests you, you may want to recheck it from time to time. Two of the most interesting questions in Physics relate to the value of Electric Charge. Why is it's value quantized and why does it have the particular value of appr. 1/137? This is not an...

I have never seen an explicit formula to describe the relation between charge density and geometry (e.g. local curvatures) of the surface of a conductor. We all know that charge tends to accumulate at edges (high curvature) but can we be more quantitative? Hope someone else will find this...